happy-shampoo-dance 

Where you are happy and dance because you have shampoo on your head. One needs to be exceedingly happy about having shampoo on one's head to truly perform a successful happy-shampoo-dance.

"I did the happy shampoo dance."

happy-shampoo-dance by (=] November 16, 2004

happy-shampoo-dance 

when you dance around with shampoo on your head and your all happy and shit.

Let us dance the happy-shampoo-dance!
Indeed, we shall!
(Crazy Indian music begins playing)

happy-shampoo-dance by Fluffy Marshmallow November 14, 2003