What a Whopper is a 1961 British comedy film directed by Gilbert Gunn and starring Adam Faith, Sid James and Carole Lesley. It was written by Terry Nation from an original script by Jeremy Lloyd. The film was produced by Edward 'Teddy' Joseph, father of Eddy Joseph.

Plot

Struggling young writer Tony Blake is served an eviction notice by Mr Slate from his rented room in a Chelsea house shared with other artistic types including abstract "flicking" painter Arnold. Tony hatches a plan to drum up interest in his rejected book on the Loch Ness Monster by faking a sighting of the creature. He and his friend Vernon, who makes electronic music, construct a phony monster, which they photograph in the Serpentine, startling a tramp. The two friends and Vernon's ditzy girlfriend Charlotte "Charlie" Pinner decide to visit Scotland to further their ruse. Driving in a second-hand Rolls-Royce hearse, they pick up a young French hitchhiker, Marie, along the way. They are pursued by Charlie's dipsomaniac father.