A thug punched a man leaving him with a fractured skull, because he didn't accept his friend request on Facebook.
The victim, a single father, was knocked backwards by the blow causing a skull fracture and bleeding on the brain, Newcastle Crown Court heard.
He also developed Bell's palsy – a condition which causes a lack of control of facial nerves on one side of his face.
The two men were outside the Union Club in Consett, County Durham, last July when Dixon approached the complainant according to Chronicle Live.
The defendant, who had 87 previous convictions, told the man he was unhappy about the social media snub.
Later, he told another man in the bar he was going to hit the victim but was told not to as he was "a good lad".
David Comb, prosecuting, said: "The complainant was outside having a cigarette when the defendant walked up to him and punched him once in the face, hard.
"It caused him to keel over and drop to the floor like a stone, banging the back of his head on the pavement as he did so. He lost all expression at that point.
"One of the complainant's last memories is being bothered by Mr Dixon about not accepting his request to be a Facebook friend."
Dixon, 31, of Henley Gardens, Stanley, County Durham pleaded guilty to GBH. He also admitted separate charges of assaulting an emergency worker and assault by beating.
That related to an incident in May when he hit a man in the face with a glass bottle then kicked a PC in the abdomen while in handcuffs awaiting hospital treatment. He also threatened to bite officers faces and headbutt them.
He was jailed for 22 months by Judge Robert Spragg.
Christopher Knox, defending, said the medical condition of the man attacked outside the club appears to have improved although it remains a serious injury.
The court heard Dixon had been "making progress" before the latest spate of offences.