Heroically coined by morning jock Elliot Segal on DC101 as a t-shirt design. it means absolutely nothing except when you say it, you gotta say it like white trash. it also makes a great insult when you can't think of anything to say.
Say i was going to the White House but couldn't figure out which tux I'd want to wear. Then i'd probably just put on my "Smell My Face" t-shirt and some jeans i wore the day before