piggy sex Share definition Flag When a guy gets raped by a hillbilly and the hillbilly makes him squeal like a pig during the ordeal. Bobby got some piggy sex in the movie Deliverance. It was a good time that he'll never forget. piggy sex by anonymous 6812 June 7, 2009 0 0 Get merch Get the piggy sex mug. Buy Now — $32.95 See more merch