Kendra Wilkinson -- Only a MORON Would Use Ass as Golf Tee

Kendra Wilkinson has NO SYMPATHY for the model suing Playboy ... telling TMZ Sports only an IDIOT would let someone hit a golf ball off a tee shoved in their butt.

Kendra was leaving the Planet Blue clothing store in Bev Hills this week when she UNLOADED on Liz Dickson -- who claims she suffered injuries during the ass-stunt, which took place at a Playboy event back in 2012.

"That's HER fault," Kendra said ... before spending another minute ripping the model.