A bag used by people who have too much swag for their body to contain, in which they store their excess swag.
person 1: hey man, can you hold this for me.
person 2: no, sorry man, my hands are full.
person 1: oh what are you holding?
person 2: it's my Swag-Bag.
person 1: my bad man, I always wondered how you were able to have such a high level of swag.
person 2: yeah, I have a swag level over 9000
a back pack with an aztec design in which a male of female will carry on their back. person should walk wth general swagger whilst carrying a super cool swag bag. they can be purchased from topman/topshop.