You're walking down an empty street one night, it's raining and you use a small umbrella that you picked up at the only open gas station in your city that was a few blocks away. You see a woman in the middle of the road, apparently getting soaked by the downpour. You walk up and offer part of your umbrella to her, but in doing so you notice the parts you sheltered have become invisible. You flinch and jump back confused

The woman says with a sad voice

I didn't mean to scare you....