This involves 1 man and another man or woman. The first man uses his hands or some salad tongs or a C clamp to hold the second person's Butt hole open. It must be opened wide enough to fit a pop can. The first man must then stand over the other person wearing no pants, bending his knees into a squatting position while aiming his balls straight for the gaping anal cavity below, dunking them in, just like so. Dunk and repeat as many times as desired while masturbating to reach maximum pleasure.
*Jeff arrives at local rub 'n' tug*

Azn Spa Attendant: Welcome, sexy white man....Me suck you, fuck you and nice relaxing massage.... $60 special for you....me so horny....

Jeff: Actually I don't think that will be necessary today. Are you familiar with the Dunkaroo? How much?

Azn Spa Attendant: Yes! Of course baby! $20 special for you! *lays down and throws legs up over head* dunk them deep baby!
by Emzmck October 24, 2017
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A dunkaroo is a sexual maneuver whereby a male of the species holds a woman of the species firmly by the hair. The male then penetrates said female anally for a undetermined period of time. The male then, while keeping control of the hair (this is important), scampers around the side of the women and places his penis in the woman's mouth while making a stirring motion with his hips. This is the dunkaroo.
"Do you see that filthy hosebeast over there by the keg? Last month at the Halloween party I dressed up like a kangaroo and did the dunkaroo on her. She got that booty mouth while dressed like a slutty Tinkerbell."
by CPT Ron February 18, 2021
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An expression popular in the Waterloo area as an alternative to "dip like cheese wiz". Used when leaving a place or event.
1) "there's nobody in the lounge, let's dip like Dunkaroos"
2)
Student1:"Are you dipping like cheese wiz?"
Student2:"Nah I'm dipping like Dunkaroos"
by Colliber March 8, 2016
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