I have no idea where *anyone* would go with this one, except for the 
obvious variation:

Ranma: Heh-heh-heh-heh-heh. Look at Shampoo. She's a babe.

Ryoga: Shut up, Ranma. Huh-huh-huh-huh. Butt out. 

Ranma: Heh-heh-heh. You said "butt." Heh-heh-heh-heh.

Ryoga: Uh-huh-huh-huh-huh. Look out, Shampoo! You're about to get your 
curse! 

Ranma: Water! Water! Heh-heh-heh-heh! Water!

Urr... Sorry about that. Anyway...
(and I don't even watch Beavis and Butt-Head)

---
Raphael See