When one is constantly plauged by a look of disgust, in which their upper lip is perpetually curled upward, as if there is a stench in the air, or rather, as if their upper lip stinks. Thugnecks often possess this look, perhaps due to the stench of their molestaches.
He always had this ugly look on his face as if his upper lip stank. He must have had Stinky Upper Lip Syndrome (SULS).
de B. Mosher 15 juin 2007