That's the sound of a big ol' club coming down decidedly on the head of a very, very stupid person.
I REALLY want a magic wand that I could tap and zap one into non-existence, but the FBI might interpret my sound effect was really a violent aggressive threat, so I'll hope the club knocks some sense into a person, of incompacitates their ability to speak, rendering them inoperable and ineffective.
Sharpton should thank whatever demon watches over him every day that it's not possible for a person to be “wished into the cornfield”!
He's a VERY bad man!