Cam Newton threatens to ‘slap the s--t out of’ heckler at Auburn-Alabama game (VIDEO)

Riding high after beating the Cowboys in Dallas on Thanksgiving, Cam Newton was back in Auburn Saturday to watch his Tigers take on Alabama in the Iron Bowl.

But while walking to Jordan-Hare Stadium, Newton — who quarterbacked Auburn to a national championship in 2010 — became the target of of some unexpected heckling.

A fan can be heard on video yelling "180K!" at Newton as he walks through the crowd, a reference to the quarterback's alleged college recruiting payoff. Newton was not pleased, and responded with an expletive laced threat.

"I'll slap the sh-- out of you!" Newton says, turning and pointing at the fan.

While Newton was still in college, numerous reports claimed that his father, Cecil Newton Sr., had asked schools for large payouts in exchange for Cam's services. A former Mississippi State player even told ESPN that he witnessed Cecil Newton informing Bulldogs coaches the program would need to pay between $100,000 and $180,000 for Cam to commit there.

Looks like it still touches a nerve with the NFL star.

Referee prevents Manziel from taunting opponent after scoring touchdown (VIDEO)

Johnny Manziel left Texas A&M's game against Auburn early in the fourth-quarter with an injured right shoulder but came storming back by going 6-for-6 and taking the Aggies 62 yards for a 40-38 lead.

After Johnny Football capped off the drive with a one-yard scamper, the sometimes overenthusiastic Manziel was prevented from taunting Auburn defensive back Trent Fisher by the same referee who signaled touchdown at the goal line.

Watch as the alert ref races over to get between the two players and directly tells the ready-to-explode Manziel, "Don't do it."

Manziel smiled and held in his excessive tendencies. But the Aggies still lost 45-41.

Here's the play that briefly knocked Manziel out of the game.