the jamaican house guest is when a girl is riding a guy, and suddenly a random jamaician enters the room, squats over the guy, and shits on his chest, then leaves without saying a word
"Colleen and Francis told me that they encountered the jamaician house guest last night."

"Last night I was fucking Con, and someone gave me the jamaician house guest," said John
by Gay 69 May 23, 2008
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