Sexy: a model jumping on a trampoline. Definitely not sexy: tearing the meniscus in your right knee. But the latter is what Denise Underhill claims happened to her in a new lawsuit filed against Playboy. Underhill’s suit says she was asked "to jump on a trampoline ... in order for photographs to be taken of her” during a shoot at the mansion in 2009, and that “there were no warning signs posted ... as to the dangers posed by the use of the equipment.” She adds that after she injured her knee, she was sent away with crutches rather than being offered medical assistance, TMZ reports. (More strange stuff stories.)