He/She keeps trying to stick their fist up your butt.
or
Those who read binary and those who don't.
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He was a baaaaaaaaad driver.
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One who knows how to play the saxophone, but doesn't!
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Is that you mommy?
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Only one. But he'll leave a big puddle of spit on the floor underneath him.
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Should've been called Look Who's Hawking, that's my only criticism.
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None. Astronomers prefer the dark.
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So he has nothing to chauffeur it !
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A hush puppy.
or