The 16-year-old was pictured coming out of the upmarket La Porte De Indes restaurant in Mayfair with a drawn-on moustache as he flew his remote-controlled helicopter through the air.
According to UK newspaper the Daily Mail, the teen singer flew the helicopter in to his minder's head as he tried to help him into the car.
However, when the helicopter crashed to the ground he reportedly just left it there and went off in the car.
As his bodyguards helped him into the waiting car outside the restaurant, Bieber allegedly went into a strop after getting annoyed.