This word is from the anime series Umamusume: Pretty Derby. It is a combination of two words: Uma (ウマ), which is the Japanese word for horse, and Pyoi (ぴょい), which can be classified as an onomatopoeia for "hop." Therefore, the literal translation is roughly "horse-hop" or "horse-jumping."
In online discussion and fandom usage, this word is sometimes used as a euphemism for sexual intercourse or "going all the way."
In online discussion and fandom usage, this word is sometimes used as a euphemism for sexual intercourse or "going all the way."
Person A: Did they actually do the umapyoi?
Person B: They definitely did the umapyoi. Just look at them.
Person B: They definitely did the umapyoi. Just look at them.
by WaverrR December 22, 2025
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