The unnamed 23-year-old – who has given a whole new meaning to the phrase ‘pull some wool’ – was found on top of a ewe with his trousers down after a fellow student heard strange noises coming from the agriculture department’s barn at 3.30am.

The fifth-year engineering student at Frenso State University blamed his baa-d behaviour on stress –  but it was a case of ‘Ewe’ll be sorry” as his lamb excuse failed to impress stunned police.

The embarrassed sheep-shagger told the cops he had gone to the barn after a night of heavy drinking because he was under pressure caused by major mid-term exams.

The student claimed he had initially planned to let off steam by beating up some cows. He eventually admitted to having sex with the sheep – but insisted it was his first time.

He was left feeling distinctly sheepish as he was charged with sexually assaulting an animal before being released from custody.

The sheep – which is used in breeding programmes – was treated by vets, and a careful watch is now being kept on the barn – presumably for fear of copycat attacks.

Student Marisa Burkdoll, who looks after animals at the sheep unit, told KFSN she was horrified by the incident.

“It’s just kind of disgusting and revolting and personally makes me angry. I mean, why would you do that?”

Californian law states that: ‘Any person who sexually assaults any animal….for the purpose of arousing or gratifying the sexual desire of the person is guilty of a misdemeanour.”

We think best stick to counting sheep at night rather than mounting them.