noun - 1. the popping sound created when a man pulls his cock out of his lover's ass; 2. a lollipop that has been inside someone's ass, similar to a pussy pop
"Your sister is a freak! Instead of sticking that lollipop up her pussy, she stuck it up her ass. I loves me a tasty ass pop!"
Quite simply, having sex with another man's balls; similar to tit-fucking, a banana split is achieved when a man wraps another man's testicles around the shaft of his penis.
I couldn't fuck my best friend's father: he only had one testicle, and I just love to Banana split.
A sequence of related events: first, tricking your grandmother into believing you are a nudist; next, getting her to take her clothes off; next, making her sit indian-style on the front lawn; then, ordering a pizza to be delivered; then, chitchatting with the delivery boy about an arbitrary topic of your choice; and finally, beating the pizza money out of your grandmother with a butcher's cleaver; truly, this is a most perverse sexual fetish
Does this one really need an example? Okay, here goes:
I hate my grandfather. He never leaves the house, and he doesn't own a butcher's cleaver, so Charleybrowning my gram-gram is fucking impossible.