A huge large wad of used toilet paper stuck on someone's ass after wiping. Usually happens from using cheap toilet paper. Dinkle melons are much larger than dinkleberries.
Julie was disgusted to have found a dinkle melon on the floor of the bathroom that must have fell off of Marc's ass when he got into the shower.
The sexual act of a man suspending his testicles to be massaged in between a woman's breasts. Sort of like a combination of teabagging and titty fucking.
Oh man, my girlfriend melonballed me last night. It made my balls feel good. You really need to try melonballing. It's the shiz.