The story
From the interjection woohoo.
First known use, by meaning
- from 2004 To engage in sexual intercourse, especially as referenced in The Sims video game series.
Etymology from Wiktionary, CC BY-SA 4.0.
woohoo
Today it means: Used to express sudden or exuberant joy, happiness, excitement, approval or delight. Full definition →
First used 2004