Orcabilly Share definition Flag An obese girl that goes to Psychobilly and Rockabilly shows. Usually dressed as vintage pinup models ala Betty Page, hair pinned up into pompadours and red lipstick. I thought that 56 Chevy was a lowrider until an Orcabilly got out and it sprung up! Orcabilly by Kaptain K January 11, 2006 0 0 Get merch Get the Orcabilly mug. Buy Now — $32.95 See more merch