When it comes to walking over drains I have to walk on them making sure I step on each one with just one foot, so say for example, 3 drains, I'd take three steps, each step on a different drain.
I need the TV volume to be on an even number say, 24, 26, 28 etc. No odd numbers
Things pretty much need to be neat'ish in my room else I'll have to rearrange it. Used to have pretty bad OCD but I've been really laid back about it this year at Uni.
When I'm watching tennis and the player I want to win is on screen I say 'c'mon!' but only when they are on screen, if the other player comes on screen whilst I'm saying it then the person I want to win will lose the point

So I have to be quick