For all of his ability as a player, Luis Suarez can be a really nasty piece of work when he wants to be.
Despite all of his previous misdemeanours, the Uruguayan never seems to learn and risked another potentially lengthy suspension with another strange piece of behaviour during Barcelona's match with Deportivo La Coruna on Saturday.
Luis Enrique's side ran out comfortable 4-0 winners but could have had much a much tougher afternoon had the referee spotted Suarez's altercation with defender Alejandro Arribas.
The Deportivo centre-half was introduced off the bench after just half an hour with Barcelona already one goal ahead through Rafinha.
And it didn't take long for Arribas to get acquainted with his opposite number.
Suarez was running towards a high ball when Arribas started smartly obstructing the striker so his teammate would remain unchallenged.
The Uruguayan international took exception to Arribas' defensive play and appeared to lash out a closed fist to push the defender away.
As you can see by the video and Vine below, Suarez makes a fairly firm connection with Arribas' head before quickly realising he didn't stand much chance of reaching the ball anyway.
The 29-year-old escaped without punishment but can certainly count himself lucky to remain on the pitch afterwards.
It also looks like Suarez is trying to see how many different ways he can hurt his opponent. He has attempted biting, elbowing and even a racist comment but he can tick punching a defender of his bucket list too.
It seems crazy that someone with Suarez's experience would even risk doing something like that so early in a game.
Barca were so dominant against Deportivo you would have expected them to hold on to the three points even if Suarez had been given his marching orders but he won't - and hasn't - always been that fortunate.