I am sitting at work and a couple of us are IM'ing back and forth and the subject of Happy Days came up. We are trying to remember what Chachi's "catch phrase" was. you know, Fonzie always said "Ayyyyyyyyy". And Chachi said???

He said "Wa Wa Wa" alot. That's the only one I can think of.

It Was "Wa Wa Wa"