Have you ever grossed any one of your teachers out? I have. Once in math, I was raising my right arm, and my right shoulder is double jointed, so I grossed my math teacher out.
When I was at school I used to "gross out" my english teacher by picking my nose and wiping the bogies on my desk.
And sometimes I would "gross out" my maths teacher by vomiting into a paper bag and throwing it at her.
My art teacher used to get "grossed out" when I removed used tampons from the ladies bathrooms and smeared them across my face while I squatted on her desk and squeezed out a particularly smelly turd.
Oh and this one time, I really "grossed out" my home economics teacher when I dug up the body of her stillborn child, liquidised it in a blender and used it as a lubricant to sodomise her grandmother.
My history teacher, on the other hand, used to "gross me out" because he had dandruff, so it's all swings and roundabouts when you come to think about it.