This sounds totally stupid, but is the correct pronounciation of Yahoo ya-hu?

Yes, just let the hu longer huuuu!!

There is a dialectal form of the word that sounds like Yay-hoo...it is usually spoken that way in jest...but it came from somewhere.

I pronounce it like Ya that rhymes with Ma (your mom) and - who

I have to disagree. I think they meant for it to be after the Spanish oo with the - on top of the oo. This means that it is pronounced like hoo or moo.

Ya - as in, Dentist, "open wide and say AHHH"

Hoo - as in " the cow says "Moooo" "

that's better than Ya Hoe.

I would use ya-who, but yours is good too.

whatever ya want it to be

Yup..i know its looks weird!

You got it right.

yes it is