sit your buttox onto a surface area.
John: Hi Josh.
*John gets out of his seat*
Josh: Sit Yo Ass Down.
John: sorry.
Josh: Don't feel sorry for your self ura bitch.
by Superdupperjohnb February 07, 2008
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A phrase used to chastise someone for being happy about something they shouldn’t be happy about. Usually comes with a catch of some kind.
“The Giants WON!”
“It was against the Buccaneers and even then it was just barely, SIT YO ASS DOWN.”
by TwinFami November 18, 2018
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