This is the shocking moment a cold-blooded killer blasts a drunk prankster in the head with a shotgun after he tries to pinch his bum.

The 30-year-old victim, name not disclosed, was killed in the neighbourhood of Veneza in the municipality of Ribeirao Neves in the Brazilian state of Minas Gerais on 16th April.

According to local reports, the suspect had an argument with another man in the bar and was overheard saying he was going home to get a gun before leaving on a motorbike with another person.

He returned around 20 minutes later with a 12-gauge shotgun and was unable to find the man he argued with before.

The victim made the fatal mistake of trying to pinch the suspect’s bottom in jest as he walked through the bar in search of the other man, baying for blood.

In the footage, the victim, seen wearing a blue T-shirt and laughing with pals at the entrance, turns around as a man in a white sweatshirt walks through the bar.

Apparently drunk, the victim stumbles forwards and tries to grab the man’s bottom.

The suspect, carrying a shotgun, catches the joker in the act and reacts angrily, pointing the weapon at him and jabbing the barrel at his head.

The suspect then steps back, loads the shotgun, and blasts the victim in the head.

The victim falls to the floor as the gunman coolly leaves the scene.

According to local media, officers arrived at the bar, said to be a known place for drug deals, to start the investigation and the victim’s body was taken away by a hearse.

The suspect reportedly fled the scene on a motorbike and currently remains at large.