When someone farts with an extreme amount of force.
Also when a person ejaculated an insane distance, generally 10 feet or over.
"Holy FUCK Michael, that was one huge ripperooni" shouted Ben.
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ripperoony (RIP-ER-OONY) - Noun. - Known as a bong rip
Person 1: Yo Eric do you have any weed?
Person 2: Yea man I have some you can smoke, you're welcome to use my bong.
Person 1: Sweet dude let me get a ripperoony.