It's a grand way of keeping people away from you isn't it? If they think you've lost the plot they'll probably avoid you at all costs. The idea came up in jest but now I'm actually considering it. Long story short.. horrible neighbour who I want to leave me alone.
No disrespect intended to those with mental health problems, I actually do have mental health problems myself but nothing that presents as significant enough to make the git want to give me a wide birth.
What shall I do next time he approaches me on the landing? Scream? Start talking in tongues?