TTSIDL Share definition Flag abbreviation of "That's That Shit I Dont Like" as made famous by Cheif Keef's song "I don't like" made popular by Kanye West's remix. Friend 1: "Just saw a girl with a mustache" Friend 2: "TTSIDL" TTSIDL by KillaJ2012 July 23, 2012 Get the TTSIDL mug.