Joyful shout

• Cry of delight popularized by Homer Simpson
• Gwen Stefani's cry in "The Sweet Escape"
• Exuberant exclamation
• Celebratory shout
• "Oh yeah!"
• "D'oh!" opposite

Wiktionary Word definitions in Wiktionary
alt. (non-gloss definition: Used to express sudden or exuberant joy, happiness, excitement, approval or delight.) interj. (non-gloss definition: Used to express sudden or exuberant joy, happiness, excitement, approval or delight.)

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Boohoo \Boo"hoo`\, n. (Zo["o]l.) The sailfish; -- called also woohoo .

Wikipedia Word definitions in Wikipedia
" Woohoo " is a song by American recording artist Christina Aguilera , featuring American rapper Nicki Minaj . The song was written by Aguilera, Onika Maraj, Claude Kelly , Ester Dean and Jamal "Polow da Don" Jones , and produced by Polow da Don, for Aguilera's ...