This could happen to you!
The other day I left the house with one of my favourite long oblong silk scarves on LOOSELY secured in a weave ~ 1/2 way through my running around for the morning, I noticed it was gone!!! Slipped right off. I wasn't able to retrace all my steps, but sadly I think it is gone. Thus the importance of securing with a knot, or a pin... or at least paying attention!