roast a pig Share definition Flag when haveing a threesome, one guy is recieving head while the other gets anal. i.e. pig on a spit 1. "lets call this bitch up and roast a pig." 2. "Come through were gonna roast a pig." roast a pig by mattneesy May 19, 2004 0 0 Get merch Get the roast a pig mug. Buy Now — $32.95 See more merch
