verb: When you hold a girls legs apart and begin to vigorously eat her out until said female orgasms all over your face leaving it covered in in the sweet vagina sauce, it is called this do to the resemblence to eating one of Gods greatest inventions, the watermelon.
Verb; used to describe an African-American or extremely tan person whose bodies produce excess amounts of Melonin, the chemical which allows skin on the body to tan. 'Watermelonin' refers to the racial stereotype of African-American's having an overt fondness for Watermelons, thus anyone with an excessively dark complexion is said to have Matermelonin.
"See that guy there? He goes tanning so much, looks like he's got Watermelonin."
After unprotected sex and the women pulls up her knickers and continues her day while the man semen slowing drips out.
Zoë....."Pauline have you got a spare pair of knickers on you"
Pauline......"no why? What's up?"
Zoë......"didn't have a chance to sort my self out after sex and I'm watermeloning"
The football tradition of having kids race around with watermelon in their ass crack and the winner doesn’t have to eat the melon yet everyone else does have to eat someone elses