Sunderland's Phil Bardsley hasn't exactly been popular around the Stadium of Light for some times, but he's just made a bad situation worse by openly mocking his team-mates after their opening day defeat by Fulham.
And his cruel Tweet has backfired on him pretty spectacularly: already frozen out of the first team squad, he has now been suspended by Sunderland and told he's not welcome at the club pending an investigation.
One of Bardsley's team-mates, U21 star Scott Harrison, had posted a picture on Instagram of the distraught Sunderland players going down the tunnel after their 1-0 defeat by Fulham on Saturday.
Bardsley's response via Twitter? "Great opening day. Hahahhahaha hahahhaha!!!"
The 28-year-old had already got up the nose of manager Paolo Di Canio with a series of photos of him posted via social media earlier this year, showing him passed out in a pile of £50 notes on the floor of a casino.
Di Canio went on a public rant at the player at the end of last season, so you might think that the 28-year-old Scotland international might have learnt his lesson.
And you might also think that the lesson would have been reinforced by Di Canio's stringent new discipline rules at the Black Cats.
But as things appear on the surface, it seems those warnings have been completely lost on Bardsley, who was denied a squad number ahead of the start of the season after five years and 148 appearances for Sunderland.
In fairness to the player he seems to have realised that he had stepped over the line by cackling about his team-mates' defeat, and he quickly deleted his 'Bardoman26' account.
He may perhaps claim the usual 'account hacked' defence that most athletes use in these situations, but from the sounds of things the damage has already been done. Bardsley has properly shot himself in the foot, and considering he is already struggling with a broken foot anyway that seems a particularly daft thing to have done.