To quote my computer engineer husband: "PBCAK" Problem between chair and keyboard :) only in your case it would be "PBCASM" problem between chair and sewing machine! L0L!
And yes, I've done the same thing with my netbook computer and my desktop, and right now I have two "mice" sitting on my desk... at least I moved the one to my netbook up and it's not right next to my desktop's mouse!