rooty - toot - toot

I like this one. I didn't know people still "rooted".

root - (rōōt, rŏŏt) intr.v. root·ed, root·ing, roots
To give audible encouragement or applause to a contestant or team; cheer. See Synonyms at applaud

To lend support to someone or something.

And today I root for you and you and you and you! Way to go!