NASCAR drivers are colorful if anything, and the nicknames that have graced some of the sport's drivers have been colorful as well. Did you know Dale Earnhardt Sr. was not just "The Intimidator" but was also known as "Iron Head?"
Here are 15 of the most colorful nicknames in NASCAR. Do you have a favorite that is not listed here? Is there an "ultimate" nickname? We would love to hear from you.