An L.A. woman is suing Playboy and a golfer for a failed stunt-- he placed a golf tee in her butt and then trying to drive a ball off of it.

Liz Dickson claims in her lawsuit that she was at an L.A. area golf course back in March of 2012 for a Playboy tournament, when she was instructed to lie on her stomach and pose for a photo with comedian and radio host Kevin Klein.

Dickson says a golf tee was placed between her butt cheeks and a golf ball was balanced on the top of the tee.  Klein then took a swing and whacked her on the butt.

Dickson claims she suffered severe injuries, some of which are permanent. 

She's suing for $500K plus punitive damages.