Top definition
To have rought vaginal sex with a female , usually after injesting many alcoholic beverages.
After a few cocktails, I did some gash mashing on the GF.
by Bucky-boy Tiger-Lilly August 29, 2009
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