This has several meanings:

1) Somebody who hasn't got the mental capacity to see they are destroying themselves.
2) Somebody with a small penis
3) Somebody who has dreadlocks and a lot of piercings - also see greebo, emo and mosher
Person one: They look there's Hal
Person two: Mm, yeah, he's a right weiney
Person one: In what sense, man?
Person two: In every sense, man.
by JoJoxcore July 16, 2008
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the worst name you can be called...pretty much made because celina is a weiner.
dude your such a celiney weiney, holy shit!
by frank March 12, 2005
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