I always eat fast food in the same order. fries then burger. if it is two burgers it is burger then fries then burger.
to be fair though that and most of the things mentioned here aren't really OCD traits. Just habits or mannerisims.
OCD is really sucky to have and I wouldn't wish it on anyone. I don't have ocd, with the rituals, clicking, or touching things a certain number of times, but I do suffer from Pure-O as they call it on occasion. It is not fun at all, and I used to think I was going insane from time to time as it would get pretty bad.
Pure-O or the obsession part of OCD usually manifests itself in a passing thought(mother dropping her baby, the fact that you could run over someone with a car if you wanted to, etc..) many people realize these thing COULD happen. The problems arise from people who can't just let the thought pass and it eats away at them sometimes for months at a time if they don't get help.
For example, knives. we all know that knives are sharp and can hurt people. Anyone could reach into a cupboard take out a knife and hurt them selves or someone else. At one point in my life that thought crossed my mind. I didn't want to hurt anyone or myself. I would get sick that the thought had occured, I eventually developed a mild phobia of knives. Lost sleep etc. I didn't tell anyone because I didn't want anyone to think a was crazy or anything like that.
Finally one night (when I couldn't ) sleep because the obsession got so bad I looked my symptoms up on the internet. I read some very helpful, reassuring information. found that this is not uncommon and something like 1 in 4 people has at least a mild case. Many require anxiety drugs and/or therapy. I read a few ways to combat it. Immediatly told my family about it, and started doing my own remedies I had learned from the internet.
Luckily for me I've had few if any problems since. I didn't go to therapy or need any medication. I think just telling other people about it was the biggest thing, it seemed like a sickening weight was on my shoulders and was quite a private hell, but that lifted rather quickly for me.
I know I'm probably sounding a bit loony for just posting this, I just figured if anyone else suffered from the same symptoms it would help to know that you arent; the only one, it is pretty common, and you aren't crazy or dangerous to yourself or others.
Sorry for the long post...
Still

a quick link....
http://www.kcanxiety.com/