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

Brad jokes about needing a stab-proof vest when Angelina is around!That's why he bought her these Streaming Furies classes

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.