A group of friends in Philadelphia unintentionally became the creators of Instagram’s latest, bizarre hashtag meme: the #catband. And they all think it’s really, really weird that now hundreds of strangers have started playing their cats as if they were air guitars, air bongos, and even air bagpipes. Julie Malone’s cat, Lilly, has become a staple in her friendship circle “because she’s fat and really nice and you can just do anything to her and she thinks it’s great,” the 25-year-old Anthropologie jewelry buyer told TIME.