Teacher asks her class of 9 year olds to make a sentence with the word definitely in it so they can understand the meaning. Tommy shouts Miss, Miss, the teacher tells him to wait, so Mary says tonight when I get home my Mum is definitely taking me to the park. The teacher says well Mary that's not definite as it may rain and you won't be able to go to the park. Tommy jumps up again shouting Miss, Miss, once again the teacher tells him to wait his turn, then Susie says when I get home tonight we are definitely having fish and chips for tea.The teacher tells her that like Mary's example it is not definite as her Mum might change her mind and cook something else. By this time Tommy can't contain himself any longer Miss, Miss he shouts, yes Tommy she answered, does a fart come in lumps? he asked, no she said. Well then I have definitely shit myself.