Clabbersacks Share definition Flag Verb.When a group of people jump a guy and repeatedly kick him in the balls. "John was walking down an alley, when he was suddenly clabbersacksed! He spent 2 days in the hospital recovering from his wounds." Clabbersacks by Mooshooman June 10, 2013 0 0 Get merch Get the Clabbersacks mug. Buy Now — $32.95 See more merch