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