Derpnoodle Share definition Flag The act of derping like a noodle head. thing 1: that herp is such a derpnoodle thing 42: yeah i could totally kick his ass Derpnoodle by =NF= The King Of No Pants!!! August 29, 2011 0 0 Get merch Get the Derpnoodle mug. Buy Now — $32.95 See more merch