"What a Whopper" is a 1961 British comedy film directed by Gilbert Gunn. The film was written by Terry Nation, from a story by Jeremy Lloyd and Trevor Peacock. The story follows a writer who attempts to raise some cash by writing a book about the Loch Ness Monster. No publisher will take it because they all think there isnt really a monster. The writer then travels with some friends to Scotland to fake a sighting of the Loch Ness Monster. The film stars Adam Faith, Sid James, and Carole Lesley.

In summary, "What a Whopper" is a British comedy film from 1961 about a writer who fakes a sighting of the Loch Ness Monster to sell his book.