Miss Veronica is giving private physics lessons which Tempest has gone along too on this occasion. Veronica tries to explain how to calculate the volume by dividing the mass by the density. Tempest doesn’t quite understand so veronica has to demonstrate by using her fist to represent the mass the density by the vigorousness of the fist and the volume being the student’s cunt. After the demonstration Tempest fully understands the volume of her own pussy after Veronica pulls her entire fist out of her throbbing snatch.