During a biology lesson, Derek Parker claimed there was a badger sett in the woods close to his home, so the teacher organised a field trip to study it.
Early on a Saturday morning several young boys duly arrived at the woods near Parker's house with a camera to take photographs of the badgers.
Naturally, the sett couldn't be found, and it was suspected that, much like Parker's uncle who built a talking robot, the whole thing had been a figment of the boy's imagination.
Getting everyone up early on a Saturday to participate in a fictious extra-curricular activity should have been sufficient grounds for a beating, but when the film in the camera was developed, it transpired that Parker had sneaked off with it and used it to take photographs of his cock.