Frasier's funny insults.

[Patrick]

I'll start with one from Cheers' Norm and Cliff's Excellent Adventure :

"Oh, shut up, you skinnerian baboon!"

[CatNamedRudy]

My mind is drawing a blank but he just used one on Niles in an episode I watched a couple nights ago. I can't for the life of me remember what it was though.

[CatNamedRudy]

To Niles in Breaking the Ice "You look like a skinny Elmer Fudd!"

[Eddie2012]

Niles: "Don't waste your breath on this hairy, knuckle-dragging, mouth-breathing troglodyte who's probably the only male in existence who suffers from penis envy!" (High Crane Drifter)

Niles to Frasier: "You unprincipled charlatan! You unconscionable fraud! (his first words in Dark Victory)

[Frank B]

From the episode "The Candiate":
Bulldog: "Have you head the great news?"
Frasier: "What? One of your overpaid idols past his urine test?"