WWW- ALLEN Iverson isn’t just one of the great basketball stars of our time – he’s also a tireless slam-dunk in the bedroom, according to one of his ex-lovers.

In her autobiography, “It’s No Secret,” out this month from Pocket Books, former Def Jam Records office worker Carmen Bryan tells of her X-rated romps with hip-hop legends Jay-Z and Nas, with whom she has a child. But she saves her most gushing praise for Iverson, the 6-foot-tall Philadelphia 76ers guard, whom she labels a “lean and muscled” sexual “warrior.”

“Just looking at him got me excited . . . He was so physically strong he thought nothing of picking me up and creating the most erotic of poses,” writes Bryan about their first night of passion in a hotel. Even after Iverson exhausted her, he was instantly ready for more.

“In Round 2, he picked me up and swiftly carried me over to a table, perching me on its edge . . . holding me up by my hips and lower back.” Exhausted, Bryan said she tried to rest, but Iverson snapped, “You think we’re done? Oh, we ain’t done!”

“He buried his face in my neck in spontaneous affection, which got Round 3 going. By now I needed a battery to keep up with the energetic Bubba Chuck.”

Nas was also a player in the sack – “a human octopus” – she says. But he once freaked when he spotted a huge hickey on her neck from another man: “The next thing I knew I was being hit in the face with a closed fist. The impact of the blow was so fierce that I saw stars.”

Bryan got payback when she inadvertently bought a box of defective condoms that set Nas’ private parts on fire. “I ran down to the kitchen and grabbed a cup, added warm water and a pinch of baking soda . . . I told him to sit back and soak. It was at least an hour before Nas and his manhood were back to normal. ‘The things you put me through, Carm,’ he sighed.”

Jay-Z, who Bryan says she inspired to write “Give It to Me,” never had a problem getting amorous, even when he was wasted. “When [he] is inebriated his stamina increases tremendously,” she gushes.