When holding the tip of your uncircumsized wang and peeing into it, therefore letting the piss build up until you let it go on some un-suspecting bastard/ bitch.
I did the water balloon on my roommate, unfortunately his girlfriend had her mouth open
by Eric theMeyer September 21, 2005
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When somebody slides their asshole over the tub faucet and cranks the hot water up to max wow letting their large intestine blood with boiling water. When they cannot hold anymore they then release the water onto their partner. It is usually accompanied by shit particles and screams.
I dropped a water balloon on Shelly last night. It ruined the bed.
by GamerGirlPee123 February 12, 2020
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Tugging on nipples making the jiggly breast move as if you were pinching the knot of the water ballon shaking it.
My nipples are sore, please don’t water balloon me tonight.
by WTerbaloon November 27, 2019
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Trumps everything thrown in Paper, Rock, Scissors, and therefore, life. Seen on the TV show "Friends".
Phoebe: Scissors beats Paper.
Joey: Fire burns paper.
Phoebe: Water balloon.
by RansomedStallion March 09, 2015
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A sexual act involving 3 people, at least 2 of whom are men, in which one person's mouth and anus are simultaneously penetrated by a penis which then fills each cavity with urine.
- Dude, we should totally go water ballooning tonight!
- Honey, thanks for that romantic dinner -- now let's get a third so you can water balloon me!
- Oy, what a night! I got hella water ballooned and am totally wrecked today.
by m.a.t.t.y. August 12, 2008
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When you are fucking a woman,instead of cuming in the condom piss in the condom and leave her with a "water balloon".
I water ballooned this girl the other day...and done a fucking legger after that!!!
by mmmossy October 16, 2007
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the practice of urination in ones partner whilst wearing a condom
"honey we are going to have to stop, one needs a slash"
"that's ok honey you can keep water ballooning me"
by Owen Karlsonick October 14, 2011
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