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
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