Had something like these lines a few years ago. Player went down easily looking for a penalty, I gave nothing, the other team went up the other end and put a shot wide. The guy's still sat down in the goal area, and wants the physio on. While receiving 'treatment' he engages in verbals with the player who supposedly fouled him, to the point he talked himself into getting a caution for C1 (AA). As he walks off behind the goal, I inform I'm cautioning him, and before taking the name or showing the card, he tells me to "f*** off you c***". I only showed the red instead of the yellow then the red, so there was no doubt that it wasn't a mistaken second caution, but as I had already told him I was giving him a yellow, I still reported it.
He gave me some more after showing the red, but that's another story for another day!