How To Drive Snape Insane In One Class Period
Step 1: When he enters the room, start singing "Grease is the word"
Step 2: Reenact The Mysterious Ticking Noise (which I did not create.)
Step 3: When he yells at Harry yell "He only takes points away from Gryffindors because he wishes he were one!"
Step 4: When asked why you yelled that, say "Lying is bad. I knew the truth, and felt compelled to share it with others."
Step 5: Reenact Bothering Snape (which, again, I did not create)
Step 6: yell "Where's your dress?"
When he starts banging his head on the desk repeatedly, you have completed your mission