A student has been left devastated after an elaborate sex list she created ranking university men she had slept with became an internet sensation.
Karen Owen made the 'unofficial senior thesis' on her sex life with athletes at Duke University in North Carolina and originally emailed it to three of her friends.
But the project spread to the university's entire 14,000 student body and from there on to websites across the globe.
In the list, written in the form of a 42-slide PowerPoint presentation, Miss Owen rates 13 of the men she slept with - mainly from the university lacrosse team - out of 10 and created a bar graph charting their sexual prowess.
The project leaves little to the imagination and describes her sexual encounters in the university library during finals week, showers, on a balcony, in cars and while drunk.
In one of the entries, she said: 'In my blackout state, still managed to crawl into bed with a Duke athlete.'
In another, in which she rates a tennis player, she said: 'He was terrible, did not even bother to kiss me more than a few seconds and finished in about five minutes, after which he simply walked out of the room and did not return.'
Miss Owen rates all 13 men according to eight categories: physical attractiveness, size, talent, creativity, aggressiveness, entertainment, athletic ability and a bonus factor including whether they have an accent.
The top ranked man scored 10.25 out of 10, while the worst got just one.
Miss Owen called her presentation 'An education beyond the classroom: Excelling in the realm of horizontal academics' and also includes intimate details of her lovers.
In the introduction, she wrote: 'Senior year and college in general often bring about certain situations that result in the seeking of so-called "sex".
'Until now, no studies have succeeded in developing a methodology for quantifying and ranking these so-called horizontal academics.
'In this study, we used data from four years at Duke University to create evaluation criteria for such encounters and applied these criteria to evaluated subjects.'
She added: 'I sincerely thanks Shooters, He's Not Here, my friends, and alcohol in general, without whose help and support my task would have been greatly impeded.'
Most of her subjects were 'acquired' at a bar known as Shooters and Miss Owen mentions often seeing them again in the same bar weeks after their liaisons.
The list has since been taken down from internet sites and Miss Owen has deleted her profiles from social networking sites.
Speaking after it was made public, she told The News Of Today: 'I regret it with all my heart. I would never intentionally hurt the people that are mentioned on that.'