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1.
a synonym for a condom or rubber.
Friend: Yo mayne why didn't you do your girl today?
Guy: Shoooot dog I didn't wanna take no risks or nothin cause I ain't had no swag tube.
Friend: A swag tube? Wtf is that?
Guy: Fifs on yo neck its a condom!!
by SwagTubeKid June 03, 2010