peter-nerf Share definition Flag A poopy head, not a nice person..someone who is sassy to his or her parents or guardians. WoW!!!! i can not believe you called your mom a moron and then didnt take out the trash! your such a peter-nerf peter-nerf by The secret ninja cat ladyy June 21, 2010 0 0 Get merch Get the peter-nerf mug. Buy Now — $32.95 See more merch