Bath Rugby players know all about the misdemeanours of Delon Armitage.
Over the seasons, the former England full-back has picked up an inglorious hat-trick of suspensions following incidents against Bath.
There was the ban for pushing a doping official, the ban for clothes-lining Tom Biggs and the ban for knee-dropping Dave Attwood.
Whether it's stocky wingers, gigantic lock forwards or the officials who ensure the game is played fairly and squarely, Armitage's dealings with Bath while he was at London Irish revealed an attitude that was invariably cavalier and frequently contemptuous.
Those traits were on show again on Saturday when Armitage played for Toulon in the final of the Heineken Cup against Clermont Auvergne.
Latching on to a loose ball and darting off to score in the corner, Armitage gave the pursuing Clermont defender, Brock James, a wave and stuck his tongue out.
It's the sort of thing you could probably get away with on a summer's evening during a game of touch with your mates if you'd managed to pull off an outrageous dummy. If you did it at school, then you'd doubtless get an almighty ticking off by the games teacher.
On the professional pitch on the biggest stage of European club rugby? Well, there's definitely no place for such a childishly goading display to a fellow professional.
I can, however, conceive how such a silly piece of behaviour could arise. Armitage received the ball out of nowhere and suddenly, against the run of play, had a clear run to the line.
He was about to score in the final of the Heineken Cup. He probably couldn't believe his luck.
In those circumstances, perhaps a rush of blood and a display of exuberance could be forgiven.
Not if you're Brian Moore, it couldn't.
The pundit, unsurprisingly, didn't mince his words on Twitter. "If a player did to me what Armitage has just done I'd have to chin him after the touchdown," was Moore's typically frank take on the situation.
Was Moore looking for a rise? He certainly got one, with Armitage later tweeting a foul-mouthed response that included a less than flattering assessment of Moore's virtues as a writer.
What began as a piece of heat-of-the-moment exuberance escalated into a Twitter skirmish between two similarly fractious personalities. And so the misdemeanour became less about what happened on the pitch than what happened afterwards. Twitter is good at doing that.
The outcome? Moore had some choice material for his weekly newspaper column on Monday.
The Armitage-Moore spat has highlighted how the dynamic of post-match feedback on games is changing. Previously, a journalist or pundit was restricted to asking a player or coach questions at a press conference.
Now he can lob a grenade via Twitter from the comfort of his armchair and hope his subject takes the bait.
I might just try it sometime. Press officers, you've been warned!
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