What a Whopper is a 1961 British comedy film directed by Gilbert Gunn. It was written by Terry Nation, from a story by Jeremy Lloyd and Trevor Peacock. Pop singer Adam Faith stars as a writer who travels with some friends to Scotland to fake a sighting of the Loch Ness Monster.
The cast includes Wilfrid Brambell as a local postman, Sid James, Charles Hawtrey and Terry Scott. The TV reporter Fyfe Robertson appears briefly as himself, covering the alleged sightings of the monster.
A writer attempts to raise some cash by writing a book about the Loch Ness Monster. No publisher will take it because they all think there isn't really a monster. The writer and some of his friends make a fake monster and take photographs and then travel to Scotland to see if they can convince the locals.