Today, Tod and I were talking about a Weird Al song ("Headline News", to be exact) where he uses the phrase "Mister Happy" to describe the male anatomy.

I have noticed that this phrase is in wide usage and is pretty much universally known among western English-speaking cultures.

I'm wondering if anyone knows for sure the origins of the phrase. I tried to make the point that its origin was from a famous stand-up comedy bit by Robin Williams during the '80's, and it fit pop culture so perfectly that it was repeated by everyone until now it's universally accepted. (Helped along by the fact that Robin continues to use the term these days.)

Tod disagreed, claiming that it was in wide usage before Robin did that bit.

A quick web search did not reveal any immediate answers, other than to confirm the fact that it has completely permeated pop culture.

Anyone?