Roy Keane once defied Sir Alex Ferguson's orders to go hand-gliding in Brazil.
And had the former Manchester United manager found out about it at the time, Keane would have been "strangled".
That's according to Steve McClaren who opened up on the incident alongside Ryan Giggs in an interview with The Atheltic.
The Red Devils were playing in the inaugural FIFA Club World Cup in Brazil back in 2000 when Keane, alongside Nicky Butt, decided to defy their manager.
McClaren explained that the manager had told all players he didn't want to see them anywhere near the hand-gliding spot.
But Keane decided that he didn't care for his managers thoughts and went for it alongside his midfield partner Butt.
Ferguson's assistant at the time, McClaren said: "There were helicopter rides and, secretly, some of the boys went hand-gliding.
"The gaffer said 'I don't want to see anyone up there' but a few sneaked in.
"They would have been strangled if the gaffer had found out. We were sunbathing by the pool and I saw them coming down. I'm not naming the names neither."
However Giggs butted in and said: "It was Nicky and Roy."
Nicky Butt actually previously recalled this amusing story in the Daily Mail back in 2010.
He told the paper: "We'd seen these people hang-gliding and we thought, 'We'll do that'. It was Friday the 13th and we didn't realise. Andy Cole was going to do it but then he saw the date.
"Me and Roy went up. You link arms. We did it off Sugar Loaf mountain, 1,500 feet I think. I'd not done it before but I'm a bit like that. We were linked up to an instructor, the two of us.
"It was just coincidence the hotel was right near the beach where we landed. We were flying over the hotel and looking down at the lads by the pool shouting at them, 'Hey, hey'. Alex Ferguson looked up and said, 'That better be none of our players'.
"The lads stuck up for us. I think Ryan (Giggs) said to the manager that it was just some lads we'd met. Then we got back in the hotel and got in the lift - with the manager.
" 'That wasn't you two up there, was it?' he said. 'No, no, no, no, it wasn't us,' we said. It was.' Does Ferguson know now? 'He must know, there's not a lot he doesn't know, is there?"
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