When You Know
When you do the following, you might have a problem.
-Wear Affliction t-shirts
-Spend too much time working out your biceps
-Spike your hair with an inordinate amount of hair gel
-Wear diamond earrings
-Call random guys in the bar a fag (Who happen to be former employees)
-Call the floor staff tough guys as you're being kicked out
Alone, each of these things might not be too bad. Combined, they are. If you do, then you're probably a giant douche bag.