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slang: The Brazilian version of thx. It's derived from the Portuguese word obrigado/obrigada, which, of course, means thanks.

slang: Oldie but a goodie/old but gold. Used when talking about something that is very old but still good.
1: obg
2: seja bem-vindo


1: That TV show is obg.
2: Yup!
by justsomerandomcrap13 December 22, 2017
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Oldie But Goodie. A term to describe a middle aged woman over 50, that is extremely attractive, well built, dresses sexy and who has obviously taken great care of herself.
For an old babe, she is so hot, I'd definitely love to sink my link into that O.B.G.
by TIMJB1 October 16, 2006
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Oldie But Goodie, a term used to describe an ageing slapper who's still worth a donkey punch.
Matt: "Look at her, dirty old slag".
Mart: "Yeah, I'd still giver her one though, she's an OBG".
by Martin July 19, 2004
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