Future Hall of Famer JJ Watt appeared for his weekly chat with the crew on the Pat McAfee Show on Wednesday, and he had defense on his mind. As one of the greatest pass rushers ever, he's been witnessing a phenomenon that he says is "ruining the NFL".Watt brought up the roughing the passer rule in the league, saying it's gone unchecked and unexplained, befuddling the former three-time NFL Defensive Player of the Year. He has not only posted about the topic multiple times recently, but he was vocal about the 'gray area' used when enforcing these personal fouls."I'm frustrated with it," Watt stated. "I've been frustrated with it for a while, and I remain frustrated with it. I try and call it out in the games that we have, when I see it."Watt then brought up two plays from the Jacksonville Jaguars vs. Los Angeles Chargers, where one penalty was called, and the after-effect caused another defender to not complete the play, for fear he would also be flagged. MORE: Steelers' wide receiver problems may mercifully have a solution following Saints' roster move"This game - I didn't get to see the whole game - but from my understanding, this one [the penalty call] was first... [the second play] was in direct correlation to the previous one. Because that guy knows, I can't drive this guy into the ground. If I keep driving my feet and drag him to the ground or I'm going to get another penalty.The roughing the passer rule in the NFL dates all the way back to 1940, but it's been amplified over the last 20-25 years. While it was originally meant for blatant infractions, it's gotten more and more into the gray area that Watt discussed, and it is affecting the way the game is played.So, could a legendary voice motivate the NFL look at the rule and its enforcement a little closer in the offseason? Maybe. But with the league built around offensive highlights and an endless parade of potent passers, they may not want to switch any rule that protects the most important position on the field.That won't stop Watt from calling it out, however."How do you them to play? That tackle, right there, was as textbook of a tackle as you can make... I get so frustrated when a guy makes a great play, and he gets punished."