Take Your Sweet Assed Time - Sarcastic version of "tyt" - when you're pissy with someone and they say "brb" right when they don't want to talk about what's important to you.
Person 1: I'm not feelin' this...
Person 2: :o What do you mean??
Person 1: brb
Person 2: You can't just leave like that!!
Person 1: (absent for 2 minutes)
Person 2: tysat *taps foot*