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Similar in nature to a "jackass", but more of a limp-wristed jackass. A prime example of a jabass would be Andy Dick. Absolutely obnoxious, annoying, not funny and flamingly gay.
"Hey man, did you see Andy Dick on Conan O'Brien last night?"

"Why would I subject myself to that guy's so-called hilarity. He's a jabass and so are you for liking him."
by Antler Duffelbag January 25, 2009
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