What a Whopper is a 1961 British comedy film, written by Terry Nation, from a story by Jeremy Lloyd and Trevor Peacock.It treats the subject of the Loch Ness Monster in a tongue-in-cheek fashion. It stars the pop star Adam Faith as one of a group of Englishmen who travel to Loch Ness to fake sightings of the monster.The cast includes a number of leading British film actors, including Wilfrid Brambell as a local postman, Sid James, Charles Hawtrey and Terry Scott.