Laarping
Old people dressing up and fighting fake monsters like they're still young. It's like LARP, but with more bad breath and less coolness.
My uncle came to the park in a wizard costume and yelled, 'I will defeat you all!'
My grandma tried to sword fight with a walking stick and said, 'This is the best stick I've ever had!'
My dad tried to cast a spell and just said, 'I'm a wizard, and I'm not afraid of you!'