attempting to fit both your balls and cock inside of a womans vagina. it is called this because it is harder than trying to keep a dog in a bathtub.

Not anything sexual... just a dog in a bath tub

From the Greek Term: Dogamus Bathamus

When a guy sticks his balls in a girls ass.

You have your woman get on all fours and try to shove your balls in her ass. They keeping popping out like a dog in a bathtub.

While doing a girl in her box you insert your hairy beanbag into her turd cutter.

The sexual act of placing both penis and full scrotum inside the anus of your partner. Said act is aptly titled as pertaining to the complication factor of performing the act of keeping a Dog in a bathtub.

The act of trying to insert one's testicles in a girl's asshole.