Top definition
When a man realizes or finds out during mid sex that woman he is having sex with is not really a woman and in fact is a man who had a sex change operation. Like that one episode of South Park.
"Dude did you hear Joey got Mr.Garrisoned by some "chick" at the club?! He found out halfway during sex that "she" was a he!"

Mr. Garrisoned - def. Realizing halfway through intercourse that the woman you are with is a man
by Akx92 June 14, 2018
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