Here’s perhaps the most famous moment in Only Fools and Horses. Why is this so funny?
The explosion of audience laughter comes at the obvious point of Del Boy’s pratfall, but after the first time through I found myself reacting more to David Jason’s effort to recover his dignity after he gets up. To see a pretender brought low is a staple of comedy. This miners of this comic vein have being heavily represented in class-conscious Britain (Fawlty Towers is a thousand variants of this basic joke), but have also included talented American practitioners (Though some of them, like Peter Seller’s Inspector Clouseau in Blake Edwards’ Pink Panther films, were of British origin). Those who are the best at this type of humor manage to get the big laugh from their character’s loss of dignity but afterwards garner some sympathy from a pathetic, very human effort to recover it. Brilliant.
p.s. The sketch was based on a real incident, as Sir David explains here: