Even Cindy Walsh Wouldn't Buy This One

8/4/2008 1:10 PM PDT BY TMZ STAFF
Shannen Doherty has a reason why the Malibu cops didn't know who she was when she complained to them about the paparazzi last week -- just not a very good one.

We call BS on her story -- she says it was her mom at the station, not her. But her excuse begs one question ...