Gif: A COCKED-UP KNOCK-UP! (Patreon)

When his girlfriend dumped him for another guy, Simon was so furious that he attempted to use the dark arts to exact revenge. His ex was quite vain about her figure, so he cast a spell to make her pregnant with her new lover's twins. But Simon made the mistake of saying the incantation in front of a mirror, and the spell bounced back at him. Now he's stuck as a girl... and pregnant with his rival's twins!