The left arm of this country singer has a smudge that leaves more questions than it provides answers. Is that an 'X,' or did he get a little grease on his arm while working on his car? Or perhaps this singer got a tattoo he regretted, and tried to have it fixed or blacked out? 

The country artist in question is one of country music's all-time great outdoorsmen. In fact, he even has his own show on television. He's a former member of the U.S. Army who enjoyed his greatest success in the mid-2000s. Do you think you know who this tattoo belongs to? Click the button below to find out.