My eldest son, when 5 came home from school one day desperate to tell me something Son. Mummy, a boy in my class said the 's' word today Me. Oh that's not nice, you shouldn't say bad words Son. Yes, he says, I told him that but the boy said I didn't understand what it meant so I should shut up. What does it mean? Me. Thinking the worst it could be is 'shit' says, well tell me what he said and I will try to explain. Son. No, you will tell me off Me. No I won't, don't worry, in this situation I won't. Son. Hmmmm ok..... F*****g he'll Me. Shock, oh that's not an s word, it's an f word! And floundered dreadfully for ages.