Butt-head: Hey Beavis, I'll buy one of your candy bars for a dollar.
Beavis: No way. They're two dollars, butthole.
Butt-head: Uh, then can you like loan me a dollar?
Beavis: No way! Cause then you would have two dollars and I won't have any!
Butt-head: Come on, Beavis, I'll buy one from you. That way you'll sell a candy bar plus you'll have two dollars.
Beavis: Um, okay, cool.