Top Definition
It is a sound your car makes when you have wistle tip welded inside your muffler. It is also a saying people use when they have uncontrolable excitement.
The wistles go WOO WOOO!
by KrAzY Indian 187 August 18, 2006

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its on a car, in california, and will spread elsewhere. aka, a whistletip. they r cool and annoying and will b heard from miles away.
it kinda sounds like an alarm clock, dont it?
by The "Fake" Lauren March 27, 2004

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something that really awesome ppl say or have as their aim icon
you we gonna woo wooo!!!
by Lofo (the real one) March 28, 2004

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt