Woot!

[Britney]

exclm; used in times of great excitement; to express a stage of extreme excitement; often used instead of yes! saweet!awesome, etc.;

[Becky]

1. A signature word used to describe a feeling of joy, excitement, happiness, agreement or another positive emotion -used by Laura Hill (famous owner of Hills Kitchen)...the word can be capitalized or lowercase but must be followed with at least one exclamation point.
2. A positive interjection similar to Awsome Yay Hurray, Huzzah Yahoo Yes Yea Sweetor Woohoo but much cooler