School prefect, Cupcake, is sympathetic when Andy Moon confesses she can't concentrate on studying because of how boring it is! Luckily she has the solution. A nice orgasm when studying helps clear the mind of distractions and prepares students for longer studying. Surprisingly to Cupcake, Andy already knows..and has one in her backpack! Giggling the girls challenge one another to a cum-off! Whoever cums first has to study the longest. The girls pull of their white cotton panties and begin buzzing away, their vibrators slowly turning higher and higher as their arousal increases. First Andy cums and Cupcake suggests best two out of three. The girls play with their selves more, wondering if a student might walk in and fantasizing about Professor Smith punishing them if he caught them. What a wonderful study break!