He's not the messiah, he's a very naughty boy

Something of a catchphrase, this is a quote from Monty Python's "Life of Brian", which is shouted at the crowd of followers by Brian's mother after she suffers the double indignity of waking up in the morning and:

1. Finding her son in bed with Judith
2. Finding the street outside packed with a huge crowd labouring under the misbelief that Brian is the messiah.