Shuffling/trying accessories on another person's trunk will copy the accessory on the Toon.

[Fredrick]

When I was on my Toon, my friend wanted me to go to her estate. I got bored so I went to her trunk and looked through her accessories. When I finished, I clicked cancel/okay (whichever button shows up) and her tail accessory was stuck to my Toon. I can't seem to find a way to get rid of it, my trunk doesn't count the accessory as mine either (http://prntscr.com/510r46) and it doesn't look that great on my Toon :/ I hope you guys can fix this!