What is S.u.?
1.
SU (said 'S-U', not 'sue')stands for socially unacceptable. It is mainly used as an interjection or adjective to describe things that are socially unacceptable, weird, bizarre, or simply inappropriate in a give situation.
Did you just ask that complete stranger to rate your ass? S.U.!
That girl is such a freak. All I have for her are two words... S.U.
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When a man is making love to his partner from behind in the kitchen, and he repeatedly bashes his partner in the side of the head with a..