Episode 4

S2, E4: Tommy is infuriated when Vicky picks him up on a grammatical error. So, when he and Raymond are called to a school to get rid of a rat, Tommy is determined to show that he is not just a dumb rat-catcher. His insecurity comes to the fore, however, when the history teacher tries to engage him in a conversation. Tommy later insults the school caretaker and, feeling guilty, decides to apologise. When he gets to know the caretaker a bit better, however, he realises that the original insult was totally justified. When Tommy gets a chance to speak to the pupils, he eschews conventional teaching methods in favour of "blowing their minds".