Jo is alone in class but doesn’t yet realise that earlier Mercedes covered all of her uniform in slow acting itching power! As she sits at her desk she starts to feel its effects. She feels very itchy so in her frustration she starts to slip off her uniform. Off comes her tie, shirt & shorts, but she is still itchy. She slips off her bra, but she is still uncomfortable. Off come her shoes & socks but she is still itchy, it’s no good; the panties have to come off too!