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A person who loses so hard, they metaphorically morph from a person-shaped bag of meat and blood and stuff, and instead become a big baggy blob full of nothing but lose.
"He flaked out on me again. What a fucking losebag."
by Kylasaurus January 09, 2012
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noun a person who has no real friends their own age and therefore hangs out with their kids friends or their siblings friends (not to be confused with a pedophile, milf, cougar or a douche bag, though loser may be an acceptable synonym)
Steven graduated with me in the 90's but he goes skateboarding with my little brother who graduated last year, he's such a lose bag.
by db8dork November 26, 2010
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Not just a loser but whole container of loserness.
Girl1: Matt is an uberloser
Girl2: He's a losebag
by Borg December 08, 2004
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