Tempers flared between Manchester United duo Marcus Rashford and Harry Maguire after the duo became embroiled in an X-rated exchange in the draw at Crystal Palace.
United drew a second consecutive Premier League game 0-0 and missed the chance to move further away from third-place Leicester and closer to league leaders Manchester City ahead of Sunday's derby.
Ole Gunnar Solskjaer's side put in a lethargic performance at Selhurst Park as their attempts to score a first goal in three games across all competitions failed to materialise.
And their subsequent frustration came to a head during the second half when United captain Maguire expressed his frustration that club and England team-mate Rashford had been caught offside while attempting to get on the end of a header in a promising move.
'What do you want me to do?' Rashford asked before a furious Maguire replied: 'F****** get back onside!'
Rashford's riposte then saw him appear to tell his club captain to 'shut the f*** up, f****** k*******'. Ole Gunnar Solskjaer has now seen his side go nearly five hours - or more precisely 285 minutes - without finding the net.
And Maguire was not the only person to criticise Rashford after he and his team-mates struggled to break down a resilient Palace side.
Speaking on co-commentary, former United defender Gary Neville said: 'It's a really poor performance, let's be clear about it. They're so bad.
'The touch from Marcus Rashford in the second half has been awful. He can't control the ball when it comes to him at the moment.'