wall flirting Share definition Flag Sending suggestive comments to someone of the other sex on his or her facebook wall. A cause of many relationship woes. Jealous girl to a boy: "Who the hell is that girl that you're wall flirting with!?" wall flirting by John Doee February 8, 2007 0 0 Get merch Get the wall flirting mug. Buy Now — $32.95 See more merch