a bannana spilt is when a man and woman are having sex and the gurl does a split (spliting her legs open and as far as dey can go open and lies down) on the mans or his "bannana"
by pimp daddy dollars September 16, 2004
When a human(mostly man)is receiving oral from a monkey, and the monkey mistakes his Penis for a bannana than bites it off. On occasions it proceeds to anal fuck you.
by Micheal harsch March 29, 2017