Scatting means the "skiddly-diddly-dee-beebop" sounds that old jazz musicians used to say. (I'm a former DJ and a music history buff) In fact, that's how the song starts. You hear "Skat batdat-diddly-doodly-dee-doo-boo-doo. I'm the Scatman!" Then a techno dance beat starts.
Unfortunately the mods in that forum were not familiar with the song, hence they thought I was referring to something else!!
I was locked out of that forum for 3 hours until someone explained it to them. Can you believe that???