Fair enough....although I think you have said previously that you wouldn't caution a player for angrily shouting 'feck off, ref' when you gave an offside decision against him'
Just to add to the debate, In my game last weekend, a blue attacker was dribbling the ball towards the penally area. I was about 5 yards in front of the defender, facing play and ready to move out of the way as neccessary. Red defender, to my left, started shouting, 'ref, ref' and repeated this loudly about three times in quick succession. The blue attacker, still in control of the ball stopped dribbling, to my mind as a result of the calls of the defender and a red defender took the ball past him and moved upfield. Consequently, I stopped play and gave an idfk to the attacker because the defender, shouting 'ref, ref' three times in quick succession, had 'verbally distracted him during play'
Cue bemusement from both sets of players, despite my telling them why I had awarded the free kick. Defender who had shouted saying that he had seen two players injured, another defender asking if it was a drop-ball. Blue attacker took free kick and just played it over the goal line to give a goal kick to the red team.
At no point did it cross my mind to caution the red defender (mandatory caution).....maybe next time