Sneaking up on someone when they're sleeping and slapping or stabbing them with your erection.
I'd tried to snowball him earlier on, so when I fell asleep ,he slapped me in the mug with his fucking ninja sword.
by TedZeppelin March 02, 2007
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