lol Alimo! that really made me laugh! I'd quote you if it wasn't durogatory (sp?) to you.
for me, what messes me up is..
for actual in-race problems:
1) stress
2) leaning back instead of sitting straight up
3) looking at the tv at an angle
4) a light being on in the room or coming in from a window
5) one of my 3 cats wanting pet, food, to play, or just attention. A funny story here, I was on the verge of an MC4 WR back when I was trying to hard to get the GOD time when on lap 5, Pauly the cat nudged hard against my hands and messed me up. of course he didn't mean to though, so I couldn't be angry!
6) stress
and for playing in general
1) either hand thumb blister, right hand pointer finger blister or left hand middle finger blister from who knows where, I guess rubbing against the back of the controller too hard
2) SORE HANDS. sometimes I wake up and can't bend my fingers at the joints after a night of smk and when they do bend, it hurts for awhile. a very large reason I haven't played SMK lately is my hand pain..it was getting really bad at points and I'd just keep playing. my right hand is still very sore right now, though that's probably from piano which I also can't moderate myself on!