Heather Mills’ artificial leg went flying across the room during a recent trip to the supermarket. The former wife of Sir Paul McCartney- who lost part of her left limb when she was hit by a police motorcycle in 1993 – had to be rescued by two young “heroes” after taking a tumble while picking up groceries.

“Slipped on spilled milk while being followed down supermarket aisle by two teenage boys, ended up on my ass but they rescued my leg and me,” Heather wrote in post on the micro-blogging site Twitter on Monday.