London ( CNN ) -- North Korean leader Kim Jong Un 's hair is no laughing matter . Not for the country 's embassy employees in London , at least . Chalk it up to British humor when London barbers hung a poster in their shop of Kim and his signature hairstyle : a longer top , with the sides of his head shaved . The barbers do n't consider that cut too appealing . So they used Kim 's hair to try to drum up business for their M & M Hair Academy . `` Having a bad hair day ? '' asks the sign , which features an image of Kim . `` 15 % off all men 's haircuts through the month of April from Tuesday to Thursday . '' The day after the sign went up , two men in suits entered the barber shop and confronted the manager , according to the manager 's son , Karim Nabbach , 26 . The two men were n't laughing . They told manager Mo Nabbach , `` We are North Koreans , and that is our leader on your poster , '' Karim Nabbach said . The two men apparently worked at the nearby North Korean Embassy . Mo Nabbach refused to give his name and told them to get a lawyer if they had a problem . He asked them to leave . The manager then reported the incident to police in case anything happened to his shop , Karim Nabbach said . Police acknowledged the dispute between the North Koreans and the barbers over what is -- and is n't -- bad hair . They even looked into the matter , but they found no crime . `` We have spoken to all parties involved , and no offence has been disclosed , '' a spokesman for Scotland Yard said . Calls to the North Korean Embassy in London for comment went unanswered . CNN 's Lindsay Isaac and Carol Jordan contributed to this report from London . Michael Martinez wrote from Los Angeles .
Barbers Mo and Karim Nabbach put up a sign about Kim Jong Un 's hair . `` Having a bad hair day ? '' the sign asks , offering 15 % off men 's haircuts . Two North Koreans confront the shop 's owner , saying `` That is our leader '' Scotland Yard looks into the matter but finds no crime .