(n) A female cousin of the succubus, but instead of thriving on sexual energy she sucks all fun out of anywhere she goes. Often used in reference to an over controlling, OCD girlfriend.
Friend: Dude, Jon, when are you gonna dump no-funzilla?
Jon: Hey, suck my taint... oh, wait... I gotta go, Ashley called.
From the Spanish slang word fundillo, which means "butt." In this case fundillona is a girl with a big booty. Sometimes said jundillona (hoon-dee-yona) especially in Colombia.
In Mexico and parts of central America, this word is used to describe the booty. Some say ass, behind, butt, gluteus maximums or big cheeks. In Spanish el fundillo es unas nalgas, culo, pompis, or cola.