Definitions by Merrick and Smitty

Mount Saint Helens 

When you shart and jizz at the same time.

Me and my GF just got back from Bernies Burritos and things got a little steamy in my car and in mid thrust I had a Mount Saint Helens. She then proceeded to lick my butthole.

Mount Saint Helens by Merrick and Smitty January 28, 2010