* ZURBERT???

What the hell is a “zurbert”?

On the original Cosby Show (the good one) there was a scene where the youngest daughter gave her “dad” a Zurbert (or did Cosby give it to his daughter?, whatever) This was blowing on the other persons cheek, thus making the sound of a “raspberry”

I’ve never heard of this referred to anywhere else except in this one episode of The Cosby Show, and have never heard of this action referred to anywhere else, so “Zurbert” it is.