Comedy Jokes That Must Die

Is anyone else sick of hearing the same jokes in every sitcom and comedy? I know I am. Here are some of the worst ones:

He's standing right behind me, isn't he?
We've all seen this a million times. Someone is saying something bad about someone in front of a crowd of people when suddenly, the butt of the joke is standing right behind them, hearing every word.

Dog sniffs crotch and/or humps someone
This doesn't even need explanation. I am so sick of seeing this, and I have seen it as recently as two days ago, in the new movie "She's Out Of My League."

Fighting one minute, kissing the next
Two people, who supposedly hate each other, are screaming in each others' faces, when suddenly they can't help themselves but to passionately kiss each other.

Can we please come up with some original jokes, people??