"I remember one match we had lost 2-1 to Arsenal in the closing seconds.
"I've had my dad shout at me in the past. But when I saw the boss yelling in the dressing room, it was like nothing I had ever seen.
"Even if you are strong, at heart you're thinking: 'Ouch!' You think he's going to break everything.
"The club owes him a lot. When he eventually leaves it will not be easy.
"But that won't happen too soon - he's told us seeing us play makes him feel younger."
For all that Fergie's rages can be fearsome when he feels his players have let him down, it is a belief in enjoying the game which underpins his footballing philosophy and helps him get the most out of his players.
Evra revealed: "When he has his talks before the match he draws on history, tells little anecdotes which make us laugh, which make us calm.
"And then there is his conclusion which is always the same. 'Enjoy your game'. He believes it.
"When he sees you are a bit tense he tells you: 'Hey, play football, enjoy yourself, enjoy yourself!'
"He is tough and relaxed at the same time. And he is a big joker. After France lost to Scotland he sang La Marseillaise to me all week."