"Wow" is Wubbzy's favorite word. He has probably said "Wow!" more than 1000 times. He may say it as a greeting ("Wow! Wow! guys!") or as a form of amazement ("Wow! Wow! Wow!"). Sometimes he and his friends may say it together at the same time in a group.
He Even says it in the intro ("Wow! Wow! Everyone my name is Wubbzy!")