I heard this phrase at the Comedy Store in
London when an old man was performing at the gong show. I can only presume that the heckle "Do a Morecambe" meant to have a heart attack whilst performing, as did the much-loved
British comedian Eric Morecambe, who many would consider to be one of the greatest comedians of all
time. (Although technically Mr Morecambe had his heart attack in the wings after the show.)