Do you own hand-held vacuum cleaners in different sizes, to clean/dust off your vacuum cleaners, too, like Adrian Monk does? :lol:
When I was a kid and I ate a chocolate slab, I always kept the four corner pieces until the end...
when I'm walking on a square-tiled floor, I try not to step on the fugues...but at least it never got to a point, where these kind of habits became obsessive...
also when I was playing basketball, I always had my routine, I did, before shooting a free throw...but that's fairly normal I guess.