She looks down and behind looking at her rear. She feels part of her rear becoming numb. Underneath the fabric of her skirt, she can see something snaking around under there. It finally pokes out from the bottom, confirming what it is. It's a cow's tail... complete with white hair, with black hair making up the puffy tuft at the tip. The numbness fades letting her know the new tail isn't fake at all. She can feel it twitch, the fabric of the skirt rubbing at the base of the tail.
She stands there, feeling totally dumb at the moment seeing the tail move around with her actual thoughts.
*HONK!*... *HONK!*... Her attention is interrupted by the honking of the school bus. Oh no! School! How can she go to school with that long tail flapping around below her skirt? Plus, where is that dang sock and her panties?!