Angelina Jolie's anger classes

Brad Pitt has bought anger management classes for Angelina Jolie to stop her from throwing knives at him when she gets cross.

The actor is said to be terrified that her knife-throwing will get out of control, and is hoping his gift will help calm her down, according to the National Enquirer magazine.

A source said: "Angelina has quite a temper on her and she has been known to throw a few knives around when she is angry. Angelina learnt how to throw knives for the 'Tomb Raider' movies. She is a practiced knife-thrower so it's a hobby and cathartic.

"Brad is terrified Angelina will one day hit him with a knife, and cause him a serious injury or worse. Brad jokes about needing a stab-proof vest when Angelina is around!

"That's why he bought her these Streaming Furies classes. It's a new relaxation technique based on breathing, meditation and Tai Chi."

Angelina - who raises six children with Brad - is known for her fiery temper and had a famously tempestuous marriage to Billy Bob Thornton.