Jo is always looking for ways to impress her teachers, and especially her Headmistress. So she has gone to Headmistress office to give her a nice surprise. She knows it is Headmistresses birthday so she has taken her some balloons. She is wearing her very geeky uniform with knee high socks. She stretches a balloon ready to be blown up. She places it to her lips and blows hard, inflating it as much as she can, and then tying the end tight. Blowing up balloons is hard work and she is feeling warm so she starts to strip off her uniform. She blows up more and more balloons, making her warmer and warmer, so she strips off more and more of her uniform & lingerie. When she is in just her panties & socks she receives a message from her friend Victoria. Headmistress hates balloons! Jo is so frustrated; she will need to get rid of them before Headmistress arrives. First she sits on them, but the balloon just expands under her cute bottom, so she tries stepping on them, but her little flat pumps are no use. Finally she finds Headmistresses pen and pops all the balloons in quick succession!