Once again we face the age-old question: who was the knuckle-head who thought this load of garbage would entice anyone to pay to watch it?

Jot down every plotline you’ve ever seen in a Christmas film, throw in all the old chestnut jokes, add a collection of seen-em-all-before characters and you have this seasonal turkey.

FBI agent Lawrence - who increasingly turns up in such toe-curling 'comedy' efforts - goes undercover as Big Momma in the home of a woman being investigated in a murder; which is about all that could be said for the film.