greek lap Share definition Flag When an individual has slept with a guy/girl from every fraternity/sorority on campus. Dude you hear that Suzie finished her Greek lap last night? She's slept with a guy from every fraternity on campus! greek lap by Ssavannahlynn June 26, 2016 0 0 Get merch Get the greek lap mug. Buy Now — $32.95 See more merch