1 definition by LB_otown

Top Definition
When a guy ejaculates and passes gas at the same time.

Combination of fart and sperm.
After eating Mexican food, this girl and I got hot and heavy, and I fermed.

I wait at least 30 minutes after eating dinner so that I won't ferm.

by LB_otown April 04, 2008

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