I was a gremlin once! When I was going to school I lived in a apartment complex. I was on the first floor and this guy lived above me. Every night at midnight he would exercise with this wheel that he would hold onto each side and it would roll on the floor. This wheel would roll out away from him than he would pull it back . Really noisy. So one night I hade enough. Then next mornig I waited for him to leave. I crawled up from my back porch to his balcony, opened his sliding door and went inside. His exercise wheel was laying on the floor. I took it and hid it in his closest.
He moved two weeks later. Have you upset anyone?
Ken