The "Stay Sharp" ads for Harp Lager ran on British television in the 1970s and 80s. They were short, witty, and stylish, aiming to set Harp apart from other lagers with a cool and clever edge. The slogan became well known at the time, but many details behind the campaign slipped into obscurity. The ads often used surreal humour rather than traditional beer imagery. Instead of showing pubs or pints, they played with sharp visuals and quick punchlines, which was unusual for a lager commercial in t