...about 25 years ago I witnessed a dreadful but very amusing floor spot by a scotsman at the Bradshaw Tavern Folk Club near Halifax, West Yorkshire. He got up to sing with his guitar and (unfortunately) a drum machine that he'd made himself, he started off OK but as his song progressed the drum machine took on a life of it's own and began to go faster and faster, rather stupidly the guy tried to keep up with it until the roars of laughter from the audience eventually drowned him out and he made a hurried and embarrassed exit! laugh! I thought me pants would never dry!