I always loved this one:

*Alright, now see this? This is a four-way road, OK? And dead in the center is a crisp, new, hundred dollar bill. Now, at the end of each of these streets are four people, OK? Are you following?

* Yeah.

* Good. Over here, we have a male-affectionate, easy to get along with, non-political agenda lesbian. Down here, we have a man-hating, angry as ****, agenda of rage, bitter dyke. Over here, we got Santa Claus, and up here the Easter Bunny. Which one is going to get to the hundred dollar bill first?

*What is this supposed to prove?

* No, I'm serious. This is a serious exercise. It's like an SAT question. Which one is going to get to the hundred dollar bill first? The male-friendly lesbian, the man-hating dyke, Santa Claus, or the Easter bunny?

* The man-hating dyke.

* Good. Why?

* I don't know.

* Because the other three are figments of your f***ing imagination!

Cheers!