Gender equity comes to Car Talk Plaza this week, as male and female callers are both advised to respond to spousal auto-critiques with a polite, but firm, "Shut up, Hon." Elsewhere, Stuart's Camry is making a scary metallic quacking sound; Bill is wondering if Radiator Stop Leak will work on his wooden hot tub; and Liz the Librarian is about to learn why she shouldn't make jack-rabbit starts. And, for Mother's Day, one Mom's tale of a teenager to be greatly admired--and feared.