An SSS Share definition Flag A Sloppy Seconds Stealer; picks up your old boys/girls/other as soon as you are done with them. Oh my God. I just broke up with my boyfriend, and Brooke already got to him. She's such an SSS. An SSS by SaltyBitch254 February 28, 2017 0 0 Get merch Get the An SSS mug. Buy Now — $32.95 See more merch