Magic Forums

So today I was driving down one of our busy streets and saw this...old woman in a shawl. Her movements were jerky and inhumanly fast, like a glitching video game, and her distance down the sidewalk seemed to fluctuate despite her steady pace. She had something in her hand and kept taking rapid bites of it yet the object never seemed to lose size. There was something off about her face as well...almost as if it were someone else's. She made me extremely uncomfortable and nobody else seemed to notice, and the space and time around her seemed warped, like there was no real...cause and effect to how she moved. Does anyone have any information or ideas as to what she/it might have been? I asked my friends about her and they don't remember anything unusual, so maybe that helps?
I sound crazy, I'm sure, but I would really appreciate some information.