A teacher asks her class to use the word 'contagious' in a sentence. Roland, the class swot, gets up and says, "Last year I got the measles and my Mum said it was contagious." "Well done, Roland" says the teacher. "Can anyone else try?" Katie, a sweet little girl with pigtails, says ,"My grandma says there's a bug going round, and it's contagious." "Well done, Katie" says the teacher. "Anyone else?" Little Johnny jumps up and says, "Our next door neighbour is painting his house with a two-inch brush and my Dad says it will take the contagious"