I've got a weird "can't do what apparently most people can do" one and have wondered if it is genetic.

I can't walk while urinating. If I've started urinating and realize that I should be standing a little bit farther forward or back or to the side I have to stop, move, and restart.

I asked once on some other forum if others have the same restriction and everyone claimed they can easily walk while urinating.

try peeing your pants - just a little and where there won't be serious repercussions. it kind of illuminates the line between the conditioned and the physical - y'know