The bartender says excitedly, "Give me one." He snatches one from the drunks hand, and gulps it quickly down with water. In a few minutes he comes back over to the drunk and says he doesn't feel any smarter.
"You probably didn't take enough." So the bartender quickly gulps down another one.
Half an hour later the bartender asks for a third pill. This one he looks at with more care. He sniffs it, and tastes it slowly. "Why, this is nothing but sheep manure!"
"See," says the drunk, "you're getting smarter already."