Top definition
When you have sex with a female while she is menstruating and the guy is doing a shit and getting mess all over the place.
guy 1: omg man i got to 101st base with my girlfriend last name

guy 2: *throws up*
by Jubz! October 25, 2006
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