His mode of consumption elicited a flurry of responses from some Twitter wags:
Hahhaa, David Cameron eating a hot dog with a knife and fork. Silver service only for the privileged!" was typical of the comments on Twitter Tuesday, 30 days ahead of Britain's general election.
"What kind of monster eats a hot dog with a knife and fork?" asked another.
Cameron eating a hot dog with knife & fork has echoes of when rich Mr Pitt did same with a Snickers bar in Seinfeld:
Unlike Mr. Pitt, I somehow doubt that Mr. Cameron will be establishing any new consumption trends in the foreseeable future.