Drollery
Part of speech: noun
Definition: comical quality. amusing behaviour. something humorous, funny or comical. a puppet show; a comic play or entertainment; a comic picture; a caricature. a joke; a funny story.
Clowning
Part of speech: verb
Definition: To act in a silly or playful fashion.
Example sentence: The tour bus is always fun, and there's plenty of time to watch movies. Actually, Kanye introduced me to the movie 'Step Brothers.' We were sitting there, watching it and clowning around - it was so funny, man.