Talk:Mystery Key/@comment-27115009-20160101013304/@comment-27701180-20160130010941

There definitely was something.

Before I got the key I was behind Napstablook & Mettaton's houses and I noticed that if you press z whilst behind Mettaton's house you got the "It's locked." message that you get when you try the front door.

After I bought the key but before I'd used it to unlock the house I tried the back of Mettaton's house again but the message didn't show up. No idea what that means, but you definitely didn't imagine it.