Two brothers who kicked a man after knocking him to the ground have each been locked up for nine months at Lincoln Crown Court.
Aaron Woods and his younger brother Leon attacked their victim in the early hours of the morning following a confrontation in Sleaford.
Judge Sean Morris told them: "This was a sustained assault on the victim with the use of a foot as a weapon. It was two on to one.
"When the boot goes in then the defendant goes in. The reason is that kicking somebody on the ground often results in death or brain damage. It can result in very serious, lasting injuries. Even just one kick with a training shoe. The message must go out that this barbaric behaviour of kicking people on the ground must stop."
Aaron Woods, 22, of Newfield Road, Sleaford; and Leon Woods, 20, of Spring Gardens, Sleaford; each admitted assault occasioning actual bodily harm on September 3, 2011.
David Lee, prosecuting, said the victim arranged to meet his former girlfriend in the town after finishing work.
When he arrived she was in the Dog and Duck pub with Aaron Woods together with Leon and Leon's partner.
The man was in his car when Aaron Woods shouted at him and after the victim got out of his vehicle he was struck by both brothers.
Mr Lee said "He was knocked to the ground and was kicked on the ground by both men. It went on for some time before it suddenly stopped."
Leon Woods then started kicking the man's car.
The victim called police and moved his car but was attacked again while waiting for officers to arrive and received more kicks.
He was taken to hospital where he was found to have suffered extensive bruising.
Chris Jeyes, for Aaron Woods, said his client had a problem with his temper.
"He recognises that if he does not sort it out he may well be before the courts in the future."
Mr Jeyes said both defendants had been affected by the death of their mother and Aaron had helped care for her.
"He is deeply ashamed of what he has done and he knows his mother would be ashamed of his actions."
Edna Leonard, for Leon Woods, said he had never been in trouble before.
"He says there was a remark made about his mother and that is how he came to be involved. Something caused him to lose his temper and he is ashamed of himself for the way he behaved that night."