"One of the students," Piotr said, refraining from a chuckle. "She... has a pronounced and unexpected quality to her transformations which requires the shedding of a layer of skin. Underneath lies a barrier of a desired substance, but the end effect is that, as it wears off it tends to leave her... inappropriately clad."
He sighed and shook his head, laughing in a low chuckle. "She is not precisely so flamboyant as her friend, one of my pupils, but I sometimes wonder if there is not a hint of exhibitionism in her behavioral pattern. She does like to show her ability off, if not the after-effects," he added.