woohoo

Short definition from Wiktionary

Interjection

1. 1
   Used to express sudden or exuberant joy, happiness, excitement, approval or delight.

Verb

1. 1
   To engage in sexual intercourse, especially as referenced in The Sims video game series.

Noun

1. 1
   The game mechanic above, often accompanied by suggestive animations but without explicit depiction.