I have alot of weird things I do, but I think the strangest is squash the fronts of my shoes before I put them on in case there are any spiders in them. Then I check to make sure there is nothing in the shoes.
I get on kicks where I do the same thing and can't quit. For a while, it was posting on ef (no, I'm not joking). Now, I can't stop watching food network. I'm not talking about normal hobbies. I will do the same thing for 36-72 hours straight until people make me stop. I once played poker for over 48 hours straight. I may have a touch of OCD.