bottom melon 

The part of the human buttocks that peeks from beneath revealing/short clothing. An example would be wearing a towel in such a way that it rises just above the very lowest part of both buttocks.

Those shorts really show off your bottom melon!

bottom melon by Diction Donkeh December 10, 2015

melon bottom 

A booty way bigger and more juicy than an apple bottom.

That girls apple bottom is nice, but I prefer my wife's melon bottom.

melon bottom by The 39 HAndy men March 7, 2017

bottomelon 

Bottomelon is when a girl is wearing a thong in a skirt that sometimes rides up showing the bottom part of her butt cheeks. This makes her butt look like two melons are hanging out from her skirt.

(helps if your buts not a pancake)

Hey bro look at that chicks skirt. She's got a ripe bottomelon!

bottomelon by Cuev March 28, 2010