2 definitions by 20bag

in the uk, bird is a common expression for an amount (any) of prison time.
no dave tonight then?

No man,he got pulled on a warrant,he'll be doing bird for the next six months.
by 20bag May 19, 2007
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rather than just marijuana, a '20bag' denotes a deal of any illicit substance to the value of £20 / $20 and could just as easily contain rock, powder or tablets.
yo, you weighed down? what u got?

all the usuals man, nothin' smaller than a 20 bag though...
by 20bag May 19, 2007
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