is known for popping off
at fans, friends and the paparazzi.
But the singer really crossed the line attacking a teen who was bullying her 13-year-old god-daughter, Dionne Bromfield.
outside of the North London secondary school quickly turned sour when
Amy began hurling abuse at the young accused bully and spitting at
All we can say is...wow.
did not stop there, as witnesses say that