"When I'm passionate about something, I'll ink it. That's just how I operate," explains Alabama spitter Yelawolf of the many tattoos on his head. "I got both sides of my head tattooed ... this side is Johnny Cash and June Carter with my baby Fefe's name tattooed on Johnny's arm." Now that's commitment to his longtime girlfriend, Canadian singer-songwriter Fefe Dobson.

So why this particular tattoo? "I'm a huge Johnny Cash fan and it reflects my relationship." For more on his tattoos,  watch the video above! And then let us know what you think of his tats in the comments!