When I show up to class there are no other students... or chairs... just this weird substitute teacher guy in a dog mask. He threatens to tell my parents that Ive been blowing Mr. Burns for higher grades if I dont go along with his deranged pop quiz! Ugh, fine! Next thing I know my wrists are bound and my head is in some lined bucket contraption. My black and red school girl outfit with black thigh high socks remains on during the whole test. The substitute teacher begins asking me really weird questions... when I get them wrong (which is often) he dumps things like chili, mayo, tomato soup, and a secret homemade chunky slime mixture onto my face. But when I somehow get a question right I am rewarded with vibrations through my panties. I eventually get enough correct answer vibrating to cause me to climax even though my head was encased with yucky savory food that got in my ears! I got most of the questions wrong but still managed to pass for being a good messy girl!