gasoline pump

A guy goes into a costume shop.

He says, "I'm going to a costume party, I want to go as Adam. "

The girl brings out a fig leaf.

He says, "Not big enough. "
She brings out a bigger one.

He says, "Still not big enough. "

She brings out a huge fig leaf.

He says, "Still not big enough. "

She says, "Listen, Ace, why don't you just throw it over your shoulder and go as a gasoline pump? "