Top Definition
the act of vomiting into a toilet after one has pooped and hasn't flushed yet, producing a bad smell and weird colors.

ralfpoo comes from "ralf" meaning vomit and the word "poo".
This morning i had a bad hangover from drinking the night before. I also had alot of beans the last night, resulting in me ralfpooing on 3 different occasions, each smelled really bad.
by Nickgee October 18, 2009

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