After the disastrous "Brother Hooves Social", Applebloom mentions how ugly Big Mac looked as a mare. This leads to them having an important conversation.
Wouldn’t it be funny if random Human objects appeared in Equestria? Well that’s just what happened. When Rainbow Dash gets her hooves on a Fidget Spinner, she knows she has to show it to Fluttershy, but how will the timid scaredy-pony take it?