Anna Paquin and Stephen Moyer Box? Other Kinky Celeb Couple Rituals

In an interview with People magazine, hunky "True Blood" vampire Stephen Moyer said that he and his girlfriend/co-star, Anna Paquin, box together for fun. "I like the sport and she likes the blood," he said. Apparently, Anna can hold her own in the ring. "She won't stop until she's gnawed your stumps off. I tell you, my girl is hardcore," said Moyer.

Wow, this is a little weird. We wonder if these two are confusing their real relationship with their "True Blood" romance? Either way, they are not the only couple that has strange, vaguely kinky, relationship rituals. Below, a few other couples with strange habits:

When Angelina Jolie and Billy Bob Thornton got married in 2000, people already thought they were weird because of the 20-year age gap. But the couple took craziness to a whole new level when they started wearing vials filled with each other's blood around their necks. When your husband is that old, you have to be ready for a blood transfusion at any time!

Marilyn Manson and Evan Rachel Wood got together when Mason was 38 and Wood was 19. The rocker freak said he thought of his new GF as his "twin." It was rumored that the two had raunchy sex while it rained fake blood on the set of music video "Heart-Shaped Glasses." Wood said it was "one of the most romantic moments" of her life. Manson liked Evan because she understood that he liked to get up at night and sleep during the day. Sometimes she even got in his coffin, too!

In 2008, Tom Cruise's wife, Katie Holmes, was seen with purple hands. People speculated that she may have taken part in some Scientology thing called Purification Rundown, where you take unsafe amounts of vitamins to detox. It can make you pretty sick and is definitely not safe.

Will Smith's wife, Jada Pinkett-Smith, thinks you should spice up your sex life by getting it on in unusual places. She recommends doin' it at friends' houses, in the bathroom, outside, and even on the side of the road. We have a feeling she follows her own advice.