For the sake of time... punchlines only

I know, I know... we're all busy people. I, for example, am busy getting ready to go on vacation. So to speed things up a little, here are some classic punchlines (you fill in the joke yourself).

(Other submissions gladly accepted)

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Rectum? Damn killed him!

I rang the doorbell, didn't I?

This time you hold the pigeon down and I'll crap on it's head.

Aren’t you a little bit old to be believin’ in Leprechauns then?

We're the Aristocrats!

That dog's not so shaggy

Doctor: “Okay, you’re ugly too”.

Frayed knot

Only one, but the light bulb has to want to change.

They chip their teeth.

There’s WhiteOut on the screen

Watching your mother-in-law drive your brand new car off a cliff

But Mabel – it’s eating POPCORN!

Not so tough now are you Batman!!

Well wash your hands, I want a grilled cheese sandwich.