Sus Share definition Flag When someone acts or says something really gay, it makes them suspicious. Travis, Serey, Dan, Justin, Keegan, Allen, and Eman are sus because they will say this phrase: "Shut up before I'll eat your ass." Sus by AsianLikesRice August 25, 2018 0 0 Get merch Get the Sus mug. Buy Now — $32.95 See more merch