waterballon

a sexual act when one urinates into a womens vagina filling her up like a waterballon

last nite i was having sex and an my husband did the waterballon he peed in me

waterballoned

That painful sensation when your balls feel like they're going to pop after getting squished on a hard object, simulating the appearance of a water ballon being over zealously squeezed.

"Bob almost waterballoned his nuts getting off his mountain bike, damn bicycle seats"