It's the combination of these 2 terms, "Troll" and "Owned" - when a troll fails and gets owned, it's called "Trwned".
Troll: aye biiiiiiiatch wanna see my diiick?
Girl: lol sure, then you wanna see mine?
Troll: EW WTFFFFF
Troll has left the room
RandomUser: Trwned his ass hahaha
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.