The act of farting on top of a persons head.
My boyfriends bald head was cold so I spread my butt cheeks apart, sat on his head, and gave him a fart hat.
by Fart Hat October 12, 2018
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The act of farting on someone's head
Gave Ben a Fart Hat the other day, it was a wet one.
by Yaron K September 12, 2007
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