im half of joker u no how jokers mouth so wide u no y theres 2 stories one is when his wife wanted him to smile so he put a razer in his mouth and he got into toxic that made his suit purple and green hair ans white skin
the other one is when his dad was drunk and he got close to jokers mom and she had 2 knives so he took it and said " Why so serious why dont u have a smile" and he to the 2 knives and put it on each end and rip his mouth.