She passed by the potion shop just as a delivery guy tripped on a loose cobblestone. Most of his crate survived, but one bottle shattered; splashing its contents onto her rear. First came a sharp tug, then a stumble, followed by a sudden growth that tore through her pants.
Before she could process what happened, new legs had sprouted. She turned, her shock giving way to embarrassment as a breeze teased naked skin.
She nearly tripped trying to twist and crouch in a futile effort to cover her shame as the guy rushed over, offering a towel along with a stream of apologies; practically begging her not to report him.
He promised the polymorph potion would wear off... Eventually.