Definitions by bananamonkeynut

fill my cup 

the act of putting ping-pong balls into the vagina, then putting a red solo cup up the vagina. Lastly, pushing the ping-pong balls into the cup and filling the cup with ping-pong balls.

i was playing beer pong at a frat party when this girl said "Wanna see me fill my cup?"

fill my cup by bananamonkeynut September 29, 2014