They were castigated by a judge and police at a brief court hearing which was told that their "almost unbelievable" behaviour had turned the lesson of the Good Samaritan on its head. Ms Lakinski, a 50-year-old bent by a spine deformity and bullied for most of her life, had also been covered in shaving foam and kicked to "make her wake up".

During the episode in July, which lasted almost half an hour, none of the group called an ambulance to help Ms Lakinski, who had collapsed while carrying shopping home and hit her head. Only 20 minutes later, when Anderson, the phone-filmer Simon Whitehead and several others had dressed to go out to a nightclub, was a 999 call finally made. Paramedics were unable to revive Ms Lakinski, but the call enabled police to trace one of the group, Scott Clement, which led to Anderson's arrest at a local club within hours.

He admitted outraging public decency and apologised through his barrister at Teesside crown court for actions which he said he still could not explain.

The court heard that Ms Lakinski lived opposite a house in Raby Road which Anderson shared with another man, who had been smoking cannabis and drinking heavily with him all afternoon. Anderson went out in shorts with a towel round his waist when he saw Ms Lakinski slumped on the pavement.

Sue Jacobs, prosecuting, said Anderson first kicked the helpless woman and when she groaned but failed to move or open her eyes, fetched a bowl of water and threw it over her. "Apparently urged on by the fact that Scott Clement and Simon Whitehead found this amusing, you then stated that you were going to urinate on her. Simon Whitehead cleared space on his mobile and recorded Anderson urinating all over Christine's body." One of the group shouted: 'This is YouTube material.'"

Judge Peter Fox, the recorder of Middlesbrough, told Anderson he had plumbed the depths of degradation and brought shame on the people of Hartlepool. He said: "This court can do nothing to repair what you did, only pass a sentence that is right in all the circumstances - three years imprisonment."

Anderson, unemployed after brief army service, has previous convictions for illegally importing cigarettes, obstructing a police officer and driving offences.