Standing on my head in the changing room

I went into a store and tried on a bunch of clothes. Every time I put something on I would go into the changing room and stand on my head with my feet on the mirror. When I had tried on a few things I would go up to the cashier and press the clothes against my body so it looked like I was wearing them. I would go back into the store and do the same thing with different clothes, then I would go back into the changing room and take all the clothes off and leave them on the floor.