Back on March 30th, 2012, "Playboy" was hosting a golf tournament just outside of Los Angeles.  And their Internet radio show, the Playboy Morning Show, was broadcasting from it live.

 

So the male co-host, Kevin Klein, tried a stunt where a Playboy model named Liz Dickson held a golf tee between her BUTTOCKS . . . so he could hit a golf ball off it.

 

And he did NOT get a clean shot on the ball.  He accidentally WHACKED Liz in the butt with his driver.

 

She ended up with a MASSIVE BRUISE on her right cheek, and says she's had quote, "pain, suffering, worry, and anxiety."

 

So she just filed a lawsuit against Playboy Enterprises and Kevin Klein for $500,000 for punitive damages. 

 

The suit also claims she had damage to her hip ligaments and has racked up $33,000 in medical bills so far. 

 

 

(TMZ / Deadspin)