Jay Leno jokes about Mel Gibson's drunk Nazi uncle. Funny or not?

"Mad Max" Mel Gibson has appeared on Jay Leno's late night talk show for over 17 years.

If you don't believe it, watch this highlight reel of Mel's many appearances where he burps, makes faces, imitates Sean Connery, dances a jig and rubs birthday cake in Jay's face.

But we can't imagine Mel agreeing to go on the "Tonight Show" again. Not after what Jay said last weekend.