Newcastle winger Matt Ritchie was caught expressing his frustration with the linesman during his side's goalless draw against Brighton.
With no supporters in attendance, the shouts of players and managers have been much more audible since the Premier League's restart.
Ritchie was particularly livid after he was penalised for a foul on Tariq Lamptey in the 13th minute of the game.
The Scotland international was heard saying: 'How you given that you wee d***?'.
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