"That concept conveys nothing to us."

"You're only two feet tall!"

The two Fnools conferred, and then the other Fnool patiently explained, "But size is relative. We have all the absolute qualities of Terrans embodied in our temporary forms, and according to obvious logic --"

"Look," Lightfoot said, "stand here next to me." The Fnool, in its gray business suit, carrying its briefcase, came cautiously up to stand beside him. "You just come up to my knee cap," Lightfoot pointed out. "I'm six feet high. You're only one-third as tall as I. In a group of Terrans you Fnools stand out like an egg in a barrel of kosher pickles."

"Is that a folk saying?" the Fnool asked. "I'd better write that down." From its coat pocket it produced a tiny ball point pen no longer than a match. "Egg in barrel of pickles. Quaint. I hope, when we've wiped out your civilization, that some of your ethnic customs will be preserved by our museums."

"I hope so, too," Lightfoot said, lighting a cigarette.

The other Fnool, pondering, said, "I wonder if there's any way we can grow taller. Is it a racial secret preserved by your people?" Noticing the burning cigarette dangling between Lightfoot's lips, the Fnool said, "Is that how you achieve unnatural height? By burning that stick of compressed dried vegetable fibers and inhaling the smoke?"

"Yes," Lightfoot said, handing the cigarette to the two-foot-high Fnool. "That's our secret.

Cigarette-smoking makes you grow. We have all our offspring, especially teen-agers, smoke. Everyone that's young."

"I'm going to try it," the Fnool said to its companion. Placing the cigarette between its lips, it inhaled deeply.

Lightfoot blinked. Because the Fnool was now four feet high, and its companion instantly imitated it; both Fnools were twice as high as before. Smoking the cigarette had augmented the Fnools' height incredibly by two whole feet.

"Thank you," the now four-foot-high real-estate salesman said to Lightfoot, in a much deeper voice than before. "We are certainly making bold strides, are we not?"

Nervously, Lightfoot said, "Gimme back the cigarette."

In his office at the CIA building, Major Julius Hauk pressed a button on his desk, and Miss Smith alertly opened the door and entered the room, dictation pad in hand.

"Miss Smith," Major Hauk said, "Captain Lightfoot's away. Now I can tell you. The Fnools are going to win this time. As senior officer in charge of defeating them, I'm about to give up and go down to the bomb-proof shelter constructed for hopeless situations such as this."

"I'm sorry to hear that, sir," Miss Smith said, her long eyelashes fluttering. "I've enjoyed working for you."

"But you, too," Hauk explained. "AllTerrans are wiped out; our defeat is planet-wide." Opening a drawer of his desk he brought out an unopened fifth of Bullock & Lade Scotch which he had been given as a birthday present. "I'm going to finish this B & L Scotch off first," he informed Miss Smith. "Will you join me?"

"No thank you, sir," Miss Smith said. "I'm afraid I don't drink, at least during the daylight hours."

Major Hauk drank for a moment from a dixie cup, then tried a little more from the bottle just to be sure it was Scotch all the way to the bottom. At last he put it down and said, "It's hard to believe that our backs could be put to the wall by creatures no larger than domestic orange-striped tomcats, but such is the case." He nodded courteously to Miss Smith. "I'm off for the concrete sub-surface bomb-proof shelter, where I hope to hold out after the general collapse of life as we know it."

"Good for you, Major Hauk," Miss Smith said, a little uneasily. "But are you -- just going toleave me here to become a captive of the Fnools? I mean --" Her sharply pointed breasts quivered in becoming unison beneath her blouse. "It seems sort of mean."

"You have nothing to fear from the Fnools, Miss Smith," Major Hauk said. "After all, two feet tall --" He gestured. "Even a neurotic young woman could scarcely --" He laughed. "Really."

"But it's a terrible feeling," Miss Smith said, "to be abandoned in the face of what we know to be an unnatural enemy from another planet entirely."

"I tell you what," Major Hauk said thoughtfully. "Perhaps I'll break a series of strict CIA rulings and allow you to go below to the shelter with me."

Putting down her pad and pencil and hurrying over to him, Miss Smith breathed, "Oh, Major, how can I thank you!"

"Just come along," Major Hauk said, leaving the bottle of B & L Scotch behind in his haste, the situation being what it was.

Miss Smith clung to him as he made his way a trifle unsteadily down the corridor to the elevator.

"Drat that Scotch," he murmured. "Miss Smith, Vivian, you were wise not to touch it. Given the cortico-thalamic reaction we are all experiencing in the face of the Fnoolian peril, Scotch isn't the beneficial balm it generally is."

"Here," his secretary said, sliding under his arm to help prop him up as they waited for the elevator. "Try to stand firm, Major. It won't be long now."

"You have a point there," Major Hauk agreed. "Vivian, my dear."

The elevator came at last. It was the self-service type.

"You're being really very kind to me," Miss Smith said, as the Major pressed the proper button and the elevator began to descend.

"Well, it may prolong your life," Major Hauk agreed. "Of course, that far underground. . . the average temperature is much greater than at the Earth's surface. Like a deep mine shaft, it runs in the near-hundreds."

"But at least we'll be alive," Miss Smith pointed out.

Major Hauk removed his coat and tie. "Be prepared for the humid warmth," he told her. "Here, perhaps you would like to remove your coat."

"Yes," Miss Smith said, allowing him in his gentlemanly way to remove her coat.

The elevator arrived at the shelter. No one was there ahead of them, fortunately; they had the shelter all to themselves.

"Itis stuffy down here," Miss Smith said as Major Hauk switched on one dim yellow light. "Oh dear." She stumbled over something in the gloom. "It's so hard to see." Again she stumbled over some object; this time she half-fell. "Shouldn't we have more light, Major?"

"What, and attract the Fnools?" In the dark, Major Hauk felt about until he located her; Miss Smith had toppled onto one of the shelter's many bunks and was groping about for her shoe.

"I think I broke the heel off," Miss Smith said.

"Well, at least you got away with your life," Major Hauk said. "If nothing else." In the gloom he began to assist her in removing her other shoe, it being worthless now.

"How long will we be down here?" Miss Smith asked.

"As long as the Fnools are in control," Major Hauk informed her. "You'd better change into radiation-proof garb in case the rotten little non-terrestrials try H-bombing the White House. Here, I'll take your blouse and skirt -- there should be overalls somewhere around."

"You're being really kind to me," Miss Smith breathed, as she handed him her blouse and skirt. "I can't get over it."

"I think," Major Hauk said, "I'll change my mind and go back up for that Scotch; we'll be down here longer than I anticipated and we'll need something like that as the solitude frays our nerves. You stay here." He felt his way back to the elevator.

"Don't be gone long," Miss Smith called anxiously after him. "I feel terribly exposed and unprotected down here alone, and what is more I can't seem to find that radiation-proof garb you spoke of."

"Be right back," Major Hauk promised.

At the field opposite the CIA Building, Captain Lightfoot landed the 'copter with the two captive Fnools aboard. "Get moving," he instructed them, digging the muzzle of his Service .45 into their small ribs.

"It's because he's bigger than us, Len," one of the Fnools said to the other. "If we were the same size he wouldn't dare treat us this way. But now we understand -- finally -- the nature of the Terrans'

superiority."

"Yes," the other Fnool said. "The mystery of twenty years has been cleared up."

"Four feet tall is still suspicious-looking," Captain Lightfoot said, but he was thinking, If they grow from two feet to four feet in one instant, just by smoking a cigarette, what's to stop them from growing two feet more? Then they'll be six feet and look exactly like us.

And it's all my fault, he said to himself miserably.

Major Hauk will destroy me, career-wise if not body-wise.

However, he continued on as best he could; the famous tradition of the CIA demanded it. "I'm taking you directly to Major Hauk," he told the two Fnools. "He'll know what to do with you."

When they reached Major Hauk's office, no one was there.

"This is strange," Captain Lightfoot said.

"Maybe Major Hauk has beaten a hasty retreat," one of the Fnools said. "Does this tall amber bottle indicate anything?"

"That's a tall amber bottle of Scotch," Lightfoot said, scrutinizing it. "And it indicates nothing.

However --" he removed the cap -- "I'll try it. Just to be on the safe side."

After he had tried it, he found the two Fnools staring at him intently.

"This is what Terrans deem drink," Lightfoot explained. "It would be bad for you."

"Possibly," one of the two Fnools said, "but while you were drinking from that bottle I obtained your .45 Service revolver. Hands up."

Lightfoot, reluctantly, raised his hands.

"Give us that bottle," the Fnool said. "And let us try it for ourselves; we will be denied nothing.

For in point of fact, Terran culture lies open before us."

"Drink will put an end to you," Lightfoot said desperately.

"As that burning tube of aged vegetable matter did?" the nearer of the two Fnools said with contempt.

It and its companion drained the bottle as Lightfoot watched. Sure enough, they now stood six feet high. And, he knew, everywhere in the world, all Fnools had assumed equal stature. Because of him, the invasion of the Fnools would this time be successful. He had destroyed Terra. "Cheers," the first Fnool said.

"Down the hatch," the other said. "Ring-a-ding." They studied Lightfoot. "You've shrunk to our size."

"No, Len," the other said. "We have expanded to his."

"Then at last we're all equal," Len said. "We're finally a success. The magic defense of the Terrans -- their unnatural size -- has been eradicated."

At that point a voice said, "Drop that .45 Service revolver." And Major Hauk stepped into the room behind the two thoroughly drunken Fnools.

"Well I'll be goddamned," the first Fnool mumbled. "Look, Len, it's the man most responsible for previously defeating us."

"And he's little," Len said. "Little, like us. We're all little, now. I mean, we're all huge; goddamn it, it's the same thing. Anyhow we're equal." It lurched toward Major Hauk -- Major Hauk fired. And the Fnool named Len dropped. It was absolutely undeniably dead. Only one of the captured Fnools remained.

"Edgar, they've increased in size," Major Hauk said, pale. "Why?"

"It's due to me," Lightfoot admitted. "First because of the cigarette, then second because of the Scotch -- your Scotch, Major, that your wife gave you on your last birthday. I admit their now being the same size as us makes them undistinguishable from us. . . but consider this, sir.What if they grew once more ?"

"I see your idea clearly," Major Hauk said, after a pause. "If eight feet tall, the Fnools would be as conspicuous as they were when --"

The captured Fnool made a dash for freedom.

Major Hauk fired, low, but it was too late; the Fnool was out into the corridor and racing toward the elevator.

"Get it!" Major Hauk shouted.

The Fnool reached the elevator and without hesitation pressed the button; some extraterrestrial Fnoolian knowledge guided its hand.

"It's getting away," Lightfoot grated.

Now the elevator had come. "It's going down to the bomb-proof shelter," Major Hauk yelled in dismay.

"Good," Lightfoot said grimly. "We'll be able to capture it with no trouble."

"Yes, but --" Major Hauk began, and then broke off. "You're right, Lightfoot; we must capture it.

Once out on the street -- It would be like any other man in a gray business suit carrying a briefcase."

"How can it be made to grow again?" Lightfoot said, as he and Major Hauk descended by means of the stairs. "A cigarette started it, then the Scotch -- both new to Fnools. What would complete their growth, make them a bizarre eight feet tall?" He racked his brain as they dashed down and down, until at last the concrete and steel entrance of the shelter lay before them.

The Fnool was already inside.

"That's, um, Miss Smith you hear," Major Hauk admitted. "She was, or rather actually, we were -- well, we were taking refuge from the invasion down here."

Putting his weight against the door, Lightfoot swung it aside.

Miss Smith at once hopped up, ran toward them and a moment later clung to the two men, safe now from the Fnool. "Thank God," she gasped. "I didn't realize what it was until --" She shuddered.

"Major," Captain Lightfoot said, "I think we've stumbled on it."

Rapidly, Major Hauk said, "Captain, you get Miss Smith's clothes, I'll take care of the Fnool.

There's no problem now."

The Fnool, eight feet high, came slowly toward them, its hands raised.