thorny scrub Share definition Flag A person that is a prick/Dildo. It would be dick but thorny scrubs aren't real enough. Everyone hates them "Holy shit Sebastian is a Thorny Scrub I'm glad we broke up" thorny scrub by HeyyItzJay January 22, 2017 0 0 Get merch Get the thorny scrub mug. Buy Now — $32.95 See more merch