Bathrooms at work

I had a roommate who had snot rockets on the bathroom tiles. That makes more sense than people picking their noses, but it does make you wonder at work when you shake hands or use their keyboard.

 

I am going to regret this deeply but I just have to know, what the heck is a snot rocket?

 

I worked at a Randall's when I was in High School, a long time ago, and there was a sacker that got caught jerking off and spraying spew on the stall in the employee bathroom. Nasty b*stard!