When one makes an obscure and complete distortion of the facts to his acquatances or disriguard of one others statement by exclamating the word "BLAG" making a mouth with one hand and moving them in a vertical motion. A bender chat only uses two fingers and a thumb.
Person one: See that bird over there? I so totally shagged her.
Person two: Yeah I believe you... BLAG!
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blag is where someone can be concidered lying, in a big headed way. or in such a way it is hard to beleive what they are telling you...
"i got a 50 inch plasma screen tv at my house"
"blag..."
"britani is gay"
"BLAG!!!!!!!!!"
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An expression of disgust used primarily to indicate disapproval about the state of something.
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A Black Bag. Typically when you buy something questionable, you will receive it in a black bag...a blag.
Dude - are you going to drink your '40 in the blag?
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