The act of a man slapping another person in the face with the head of his penis (a.k.a. mushroom stamping) after giving them a good messy ass fucking, leaving a smear in the shape of a mushroom, or in this case, a Goomba. The origination of this definition comes from the mythical creature dwelling in the Mushroom Kingdom of Super Mario Brothers games. In the original game for NES, the Goomba sprite was identical to the mushroom sprite, only it was brown and had eyes.
by Mattlick July 4, 2008
Get the The Goombamug. by Anonymous May 5, 2003
Get the goombamug. by David Suniffer February 23, 2008
Get the Goombamug. by Blownbitch87231 December 24, 2008
Get the goombasmug. by Goomba420 August 27, 2022
Get the Goombamug. When you put the tip of your dick in your girls ass and when you pull it back out it shit is all over the tip of your dick
by Garrett Wick March 15, 2019
Get the Goombamug. Person 1 "I was about to go down on her but then I saw the biggest Goomba of my life."
Person 2 "Dang she need to get tested"
Person 2 "Dang she need to get tested"
by Jdog99999969 February 6, 2022
Get the Goombamug.