t'fillah interruptus

About a year ago, I was going into work late, and so that morning I davened at home. Suddenly, the door to the bedroom swung open and the two Polish cleaning girls walked into the room. When they saw me wrapped in a tallis with tefillin on my head and arm, they looked at me as if I was a warlock or something. They ran out of the room and from that point on, should they run into me, would stay clear of me as best as they could.