Not sure how obessive this is but if I'm in the bathroom the toilet paper has to come from under the roll, not over the roll...if I'm at home I'll switch it, and if I'm in a public bathroom I'll go to another stall that has the paper coming out "correctly"..lol
Also I have to crack my fingers in a particular order each time, starting with the thumbs and moving down to the pinkies, then again from the pinkes back to the thumbs.