Karissa and Kristina Shannon can't deny they were arrested earlier this year for battery. After all, there are police records and stuff.

But Karissa told St. Petersburg police that a coworker's boyfriend - some dude named Ben - attacked Kristina while they were partying at their coworker's apartment in January. Don't you just hate when that happens?

The incident report has been uncovered, revealing the following quotes and details related to the Shannon twins' shady past. To wit:

"Ben and Kristina started to argue," Karissa said of the melee. "Ben was calling Kristina names and making her cry. Ben hit Kristina. He then hit her with a beer bottle."

From there, Karissa added that their coworker, Erica, her boyfriend in the attack, hitting Kristina in the "mouth, head and nose."

Consequently, Karissa pulled Erica's hair to get her away from Kristina. In a tough break, though,, the jolt resulted in the coworker running into a wall and falling over.

Oh, and the entire incident took place after Ben attempted to sell the twins Xanax.

Despite the fracas, the twins had no idea they were in trouble.

When cops told Karissa and Kristina to get "up against the wall and spread 'em," they assumed it was a typical Saturday night.

Hugh Hefner looks thrilled to be photographed here with new girlfriends Karissa and Kristina Shannon. Sounds like they're the type to bring handcuffs to bed.