As he was walking down the stage with fans on either side of him, Tim McGraw slapped away a fan's hand.  The hand was on his knee.

That slap got the hand off of his knee.

But, that was not enough for McGraw.  The country singer then slapped the same female fan in the face and gave her the universal "what the hell?" expression.

Some are claiming that the woman was reaching for McGraw's crotch.  That's up for debate.

The woman definitely ripped McGraw's jeans right at his thigh.  Of course, McGraw's jeans were already torn.  Probably from all that hard work he was doing on the farm.

When the incident happened, McGraw was singing a song that is literally called "Truck Yeah."

A McGraw rep tells TMZ, "Tim was singing out in the audience and someone firmly grabbed onto his leg and wouldn't let go as he was moving through the crowd. He instinctively swatted to try to keep them from ripping his jeans (which they succeeded at doing!), and so he could get to more fans who could slap hands with him before the end of the show."

Watch the videos below.