For some reason I was thinking of an old Saturday Night Live commercial parody today. Google allowed me to find the text online. The voiceover was done by the late, great Phil Hartman.
The commercial is for a product called Happy Fun Ball, an ordinary-looking rubber ball.
Update: Wikipedia has an entry on Happy Fun Ball!
YouTube has the actual clip!
A Google search for "Happy Fun Ball" produces 113,000 hits!
And I thought I was the only one who remembered this thing.