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When an uncircumcised male pinches his foreskin, occluding the opening of the penis, allowing it to fill up with urine in order to release it, causing a sudden splash of yellow deliciousness on an unsuspecting victim.
Romanian male 1: "My roommate passed out on my couch, so I woke him up with a Romanian Water Balloon! Shit was so funny, I'm so glad I'm uncircumcised!"

Romanian male 2: " Lol, brutal. Ya, me too!"
by Dean68w10 April 25, 2017
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