What does swag mean!?

I think swag means style and how you present yourself to others. It may also mean confidence and how are you going to boost yourself to others and socialize. It also means your cool, head turner and catchy in everybody's eyes :)

One of the uses of "SWAG" is as an acronym for "Scientific Wild A$$ed Guess": http://www.internetslang.com/SWAG-meaning-definition.asp For example, the statements "Mobile phones can fry your brains" or "Eating broccoli can cure cancer" are SWAGs because they are apparently 'scientific' and yet are highly inaccurate generalities.