MAC-wack-it Share definition Flag a MAC owner who uses his laptop to masturbate to a variety of pictures and porn sites. Hey, did you see that picture of Emma Stone? She is so hot, I had to MAC-wack-it before I went to work today. MAC-wack-it by Lady Cupcake October 14, 2009 0 0 Get merch Get the MAC-wack-it mug. Buy Now — $32.95 See more merch