Boys have ovals

Landon and Cora were walking through the parking lot of our apartment this week. 

Cora (in a matter-of-fact tone): Boys have ovals. 

I wasn't there, so I'm not sure exactly how the conversation went, but Landon said that he had a little panic. WHAT was she talking about? Surely she didn't mean...

As they walked across the parking lot, he continued to ask questions. Ovals where? What kind of ovals? 

When they walked past his truck, she turned and pointed at the Ford symbol on the front. 

Cora: See, boys have ovals. Mommies do not have ovals. 

Ah-ha! You mean boys drive trucks with Ford symbols shaped like ovals; mommies do not drive trucks with Ford symbols. Allrighty then, carry on.