Baby this town rips the balls from your back

The story:

My husband and I were taking a road trip and I considered this my theme song with my new car so I turned it up and started belting it out at the top of my lungs. My husband, the non-Springsteen fan, tolerated it well until i came to that line and he began laughing so hard tears streamed down his face until he finally managed to wheeze, "did you just say balls?!"
"yeah. that's what he says!" (i knew it didn't make sense but it sounded JUST like it!)
"no! it's bones. and this is your 'theme song?'"

Now, whenever the song comes on, he sings the wrong lyrics with me and asks me how my "back balls" are doing.