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1.
Abbr. for Man With A Gun
'Duck! That MWAG is a total idiot!'
by nancyxgirl January 06, 2009
 
2.
Mwag = Mwah + Swag

a kiss with swag
Rami: Girl, you're so fine, i'll catch you later, dress to impress

Roanne: Boy, i always impress, Mwag
by Roanne Banane April 02, 2013
 
3.
another word for fuck, easily said around peers or your better half. stated the same way you would use fuck in a sentence.
Sitting in a nice restaurant

Frank: you look very pretty tonight
Lauren:yea whatever
Frank: dont whatever me
Lauren:Mwag you
Frank: Go MWAG YOURSELF!
Lauren: "developes tears"
by Big juicy Franks October 29, 2008