Skim nut Share definition Flag Skim nut is the action of helping your lifting partner after he has done his set on the bench press, but when picking up the bar you accidently skim your balls on his face. "Bro! You just straight skim nut me man, not cool" Skim nut by Kdaddy September 8, 2014 0 0 Get merch Get the Skim nut mug. Buy Now — $32.95 See more merch