4 definitions by Chase Redden

The sound made when you receive head. This term is used by men to talk with their friends about hookups so the girls wont understand.
Alex: So what did you end up doing last night?
Bob: She was like thwonk yo.
by Chase Redden January 6, 2008
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The opposite of prime. Means uncool.
Dan: Dude.. I crashed my car..
Rob: Oh.. subprime
by Chase Redden January 6, 2008
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