Dirty Dammer

When during class the physics teacher starts talking about his adventures where he saves his wife from drowning. Then he stands up and slaps every student with his massive shlong. He then goes on to give out free backshots and the principal also gets some.

John: Jo bro why'd you get sick today? You missed out on the Dirty Dammer!
Michael: Oh no, so unfortunate!

Dirty Mahedi

When you're in Mathclass and the teacher suddenly forces you to give him a rimjob whilst holding the quadratic formula in your foreskin.

"he really suffered in mathclass."
"he must have gotten a Dirty Mahedi from his teacher"