Join us, be our friend
Or just be stuck and defend
After all you only
They are telling you that you could get killed by one of them and become one them and be their friends if not then they will eventually try and kill you and you have to defend for yourself.
It means that they have been watching through the days of the week and the more they come around the more you use the doors and they are stating the fact that you use the doors A lot.
Bonnie, Chica, and Freddy are stuck in Freddy Fazbears with only themselves and the security guard and they may think the place is little because they have never been out into the real world.
