A funny pants is someone who cracks a joke
HAHAH that's the funniest thing I've ever heard, you are such a funny pants!!!
by Stif Mike May 25, 2008
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Funny in the pants is the simplest description of the equivalent of blushing in a man being so turned on
When Tony was introducing himself to Kat the love of his life she started to blush and he was so funny in the pants he ended up with a raging erection

It was in her workplace yet he didn’t apologize he actually started bragging about it
by Tonythetiler December 2, 2017
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The Act of Something or Someone being in the State of Such Concentration and Hilarity, That they have an Involuntary Eruption of Urine; To the Effect that their Pants are Completely and Utterly Soaked in Their own Urine.
"Mitch Hedberg was Piss-Pants Funny!"
"Dude, That guy Falling down the Stairs was Bad, But Piss-Pants Funny."
Man, Yo Momma is So Ugly, She's Piss-Pants Funny..."
by TheLaughsOnUs April 3, 2011
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