Simply the opposite of swag. Typically used when describing something that would taken away from or complete reverse your swag. Also used to describe undesirable situations.
Man 1: That jacket is so uglyyyyy.
Man 2: Yea that's anti swag right dehr.
Man 1: Scarlet Johansson nude pics!! SWAG.
Man 2: Yea but there blurred on that website = Anti-swag...
7👍 20👎