This definition originates from FCC (Faringdon Community College) and is coined from the controversial acts of Mr Thrower, the head of sixth form.
A good example of a 'Thrower' is to lock the whole of sixth form out of the common room for the morning, and then confiscate their football when they actually find something to do. This will make you very unpopular apace.
David: Yeah loads of people know about that, he's gonna make himself pretty unpopular now.
Miles: Yeah what a cesspool.