When you get bored in class so you start shoving pencils, erasers, paper, desks, and other students up your butthole.
Kid:"I was so bored that i decided to perform schoolsterbation and shoved Jimmy up my ass."
by We can start at the penis October 30, 2013
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.Buy the mug