2.a mushroom like creature from the early levels of the popular Nintendo platformer, Mario brothers
man 2-bitch you don't know my life
man 1- damn breh you a prick-ass goomba
man 2- youre a retarded prick-ass mark beezy
An Italian New Yorker with greased back hair carrying a baseball bat saying "Hey Tony, get a load of Sammy Sosa over here!" to ever black person that walks past him may be called a Goomba.