What does this mean?

I have always known I have bad hand-eye coordination, just very poor. It doesn't affect any part of my life really, but I know it's there. Anyway last night I learned something completely new about myself, which is kind of along these lines and is just so weird.

I was in the bathroom brushing my teeth (no pun intended) before going to bed. Now I, as most, stand still at the sink whilst brushing my teeth, always have done, always will do. My mobile phone which was in the bedroom on my bedside table alerted me that I had just received a message. So whilst continuing to brush my teeth I started to walk into the bedroom to see who it was off; and here's where the problem started. 

I found I could not walk correctly whilst brushing my teeth, seriously. My legs would not work in unison whilst I was doing it. I stopped brushing and my legs were fine, I could walk fine. I started brushing and the problem started again, seriously bizarre. Now I had not been drinking and I was not feeling ill or anything, it was solely down to the action of me brushing my teeth. 

Can anyone explain the unexplainable and tell me what does this mean? Do I also suffer from bad brushing my teeth-walking coordination? Is there such a thing? Or have I started a new medical phenomenon? Does anyone really care? The last question is rhetorical by the way, answers are not required on that one!