Sex = science, and Rita is in the lab, waiting to teach you your first lesson in 'Sexologie'.
Uh-Oh! She's getting carried away now, off comes the pristine white lab-coat, she's twirling it round and tossing it aside... Look at her go, gyrating like a go-go dancer from way down deep in the Valley of the Dolls... It's all gone a bit softcore, Vaseline on the lens and the windows are starting to get steamed up. What would the headmaster say if he walked in now?
Anyone fancy a rewind?