What are you doing?

I was sitting at the table waiting for Jacob to finish eating tonight. I glance over and Sam is digging around in his pocket or something. I asked him what he was doing. The response I got? "Just moving around my balls." WHAT??? Now we've never referred to them as that. So I said, "Uh, what are you moving around". And Sam says, "My balls mom". And then walks down the hall. I was laughing hysterically at this point and yelled for him to come back. He walks up, and now he's laughing like crazy as he sees me laughing with tears coming down my face. I reach in his pocket and what do I find? Two bouncy balls. HAHAHA!