shartcramp
Shartcramp...that moment of total body paralysis when you realize you sharted and are afraid to move because a clump of turd may roll down your pants leg and be seen by your friends and or coworkers...can also apply to being afraid to move after afore mentioned shart due to fear of movement possibly wafting your stank around the room...
I had to sneeze while experiencing a full on shartcramp and was sure I'd turn my underwear into a chocolate shotgun shooting range.