Roy Keane likes to speak his mind, that's for sure.
And when a former Sunderland boss speaks his mind, what are the chances he says anything nice about Newcastle United?
They are, of course, very low - and Keane is no exception.
Indeed, the ex-Black Cats manager, who captained Manchester United during his playing career, gave a strong-worded assessment of Newcastle and their fans in his new book.
“I always had a bit of hassle against Newcastle. I’d been sent off twice up there. I’d had my battles with [Alan] Shearer and Rob Lee,” Keane wrote in his autobiography 'The Second Half.'
“I always thought they were an arrogant bunch, for a club that had won f*** all. We always got decent results at St James’ Park; it wasn’t a bad place to play. But as for the Toon Army, the Geordies and the hostile reception – I never fell for all that crap.”
The current Aston Villa assistant also revealed that his Tyne-Wear derby win over the Magpies was his greatest moment as Sunderland boss.
“It was the first time we’d beaten Newcastle at home in thirty-odd years. It was electric – the tension," Keane added.
"[Djibril] Cisse scored, and Kieran [Richardson]. The level of player we had now had gone up since I’d come to the club. We played really well. I think it was my happiest day at Sunderland.”