A WOMAN is facing jail after admitting to biting off her boyfriend's testicles during a drunken brawl.

Maria Topp, a mother-of-four from Gateshead, England, pleaded guilty to grievous bodily harm at Newcastle Crown Court over the fight with Martin Douglas, her partner of five years, the Evening Chronicle reported.

Douglas, 45, was taken to the hospital for emergency surgery to reattach his genitals after Topp bit them off during the incident in February this year.

He was so traumatised by his wounds, which required 19 stitches, that emergency services struggled to understand him when he called for help.

Topp, who remembers the fight but cannot remember biting her partner, was arrested soon after paramedics arrived at Douglas' flat in Newcastle and called the police.

Recorder Robin Mairs said the pair had a tempestuous relationship and had both been drunk at the time of the incident.

The 44-year-old woman was warned her actions would more than likely result in a jail term.

"There is an argument, a brawl begins during which Mrs Topp admits she unlawfully bit the complainant's scrotum," the judge said.

Topp was granted bailed and warned she could face jail. She will appear for sentencing on November 11.