You heard a rumor about the bathroom ghost xiao, they say if you go to the third bathroom stall in the upstairs girls bathroom and knock three times and say his name 3 times, he will come out and grant you a wish, but he must take something precious from you in return after the wish is granted. no one has tried this before because no one has did it right, but you decided to try, and at the third knock you feel a presence behind you

Xiao: "someone actually did it right.. ugh.."