Five Nights at Freddy's: Into the Pit

This can be done right after the lights go out and everyone is screaming when you’re hiding in Golden Freddy in the prologue. Once you reach the entrance hall area you can interact with the door and Oswald says something like I don’t think I should leave and if you leave the door and go right back you can leave.

Here's also a video of me doing it if you need a visual guide.