An extra leg
If you look at this picture, you can see that the girl here does not have three legs, she just has two, but she is holding a pot up to make that illusion happen. We are sorry to have killed the secret so early on, but we thought that you all deserved to know.
We do not want anyone running around screaming about three-legged women who are alive and walking among us. They are not real people, everyone just relaxes and buys some flower pots, and you’ll all feel better. Look at how excited this girl is about her pot, that could be all of you in the near future.