Games between Arsenal and Watford at Vicarage Road always seem to entertain - and Monday night's clash was no exception.
An absolute clanger from Ben Forster gave Arsenal the lead in the 10th minute when he kicked the ball straight into Pierre-Emerick Aubameyang.
Foster took too long to release it and by the time he did, Aubameyang was on top of him and the ball ended up in the back of the net.
But things only got worse for Watford.
One minute after Foster's costly mistake, Troy Deeney was shown a red card by referee Craig Pawson for an elbow on Lucas Torreira.
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Replays showed there wasn't that much contact, but players run the risk of being punished if they swing out their elbows like Deeney did. Torreira's height didn't help either.
Check out the incident below and decide for yourselves.
Deeney was furious with the decision and he made his feelings very clear to Torreira by calling him a "f****** p****" as he walked away from the Uruguayan.
He wasn't finished there. Just as Deeney was heading down the tunnel, he turned to Arsenal manager Unai Emery and appeared to say: "He's a f****** p****. I've ran past him."
Deeney now faces missing three of Watford's remaining four games, which isn't ideal considering the Hornets are only four points above the bottom half of the Premier League.
Watford have had a decent season and they'll be wanting to finish in the top 10. Fortunately, Deeney's red card won't affect his availability for next month's FA Cup final against Manchester City.