A mum devised a clever life hack to wake her K Pop fanatic daughter for school.Footage shows Phitsanu Chaem Phakwaen playing the Blackpink song 'Flowers' as her half-asleep daughter Mango, 4, danced the choreography in Nakhon Ratchasima, Thailand, on May 30.Phitsanu said: 'Mango is very sleepy and stubborn in the morning, so I have to wake her up using this method all the time.