Manual confusion

Has it ever happened to you that you forget how you normally do something? Yesterday I pulled my toothbrush and toothpaste out of the medicine cabinet and something went wrong. I just couldn't seem to figure out the way I normally hold them. Usually I hold one in each hand, unscrew the toothpaste cap with the brush hand, squeeze it on, replace the cap and put the paste back in the cabinet. I normally don't have to think about it all; I just do it. For some reason yesterday I just failed miserably. I had to set the brush down in order to unscrew the cap, put it down and pick up the brush, squeeze the paste on and reverse. How frustrating!