Another could be 'Cake, teeth, scream'. The idea is that something normal like a cake suddenly becomes terrifying when you think of teeth and a scream perhaps related to something hidden in the cake.
Joke. A joke is a very common word for a short funny story. It is usually short and aims to make people laugh by presenting an unexpected or humorous situation.
Comical. Maybe there's a story where a girl sends a love letter to the wrong address but ends up falling in love with the person who received it by mistake. This kind of situation is 'comical' in a love story.
Perhaps 'whimsical'. A whimsical love story is full of fanciful and charming details that can make it really funny. For example, the couple might communicate through a series of comical notes or have a pet that always gets in the middle of their romantic moments in a hilarious way. The light - hearted and dreamy nature of a whimsical love story can bring a lot of laughter.
A dog found a pair of glasses in the park. It put them on and suddenly started acting very posh. It walked around with its nose in the air, ignoring all the other dogs. But then it chased a squirrel and the glasses fell off. It realized it was still just a goofy dog. It picked up the glasses in its mouth and went back to being a normal, happy dog.