DC Comics introduces a new storyline featuring The Joker becoming pregnant.
Magician Zatanna casts a spell causing Joker's pregnancy.
The birth of the child is depicted by vomiting up Clayface-like being.
Offspring resembles Joker closely in appearance.
Fans react with surprise and speculation on future Joker movies.
Zatanna was given limited panel time to react to events.
Future of the storyline in The Joker: The Man Who Stopped Laughing is uncertain.
The possibility of a team-up between mini-Joker and Duela Dent was mentioned.
Zatanna's reaction to events is unknown.