Titsday Share definition Flag A popular day on Kik in which people (generally women) flash their tits. Typically on Tuesdays and Thursdays because "T". Happy Titsday, everyone!It's Titsday! Show some boobies! Titsday by Jizzy Bizzy April 17, 2018 0 0 Get merch Get the Titsday mug. Buy Now — $32.95 See more merch