Bean Bagger

A person, typically named Rob or Trob, who pulls out their nut sack and smacks it onto a nearby desk or table, simulating the sound effect of a bean bag. It can happen without notice, and truly shock all those in the vicinity.

Joe Z: "Dude some complete mad man just tossed his balls on a high chair at Cracker Barrel infront of several families!
Jeff: "Sweet Christ, Bean Bagger's on the loose!!!"