The Canadian singer was part of a high-school gang called the 'Portuguese Mafia', but has admitted that she was thrown out for being rubbish at throwing stones.
The 'I'm Like a Bird' star said: "I was in a high-school gang called the Portuguese Mafia.
"But I was the most hopeless rebel of all time. We drove around in a van with the windows covered in black paper.
"We specialised in crashing parties and throwing stones at buses.
"I was pretty good at crashing parties but the other gang members questioned whether I could throw the stones hard enough to break the windows - so they threw me out of the gang."
The singer also revealed that she once had a near-death experience when she fell ten feet off a stage.
She told Live magazine: "I thought I was going to die when I fell ten feet off stage. In 2002 I was performing at a big arena in New Orleans.
"I was in the middle of singing the most sensitive part of 'I'm Like a Bird' when I stumbled and fell ten feet to the ground.
"The crowd seemed to think it was part of the show. 'She's singing about being like a bird and she's trying to fly. How cool'. But I was hurt."