This has happened to me and my friend, resulting in my death when I glitched through the sides of watchtower and fell to me death. Basically, when you eat/drink it seems that you can glitch through walls/fences etc.

I'm not sure what the precise conditions are or what direction you go to when you glitch but this has happened at least twice, I have not had the chance to test if it is occurring every time someone eats in such a position.