Top definition
Sperm that leaks out of an anus that has just been ejaculated into.
Alisha's pregnancy is a result of anal runoff.
by anusbeed April 01, 2010
Mug icon

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