Everybody is surprised and the story goes viral (over 2 million views) as a father of a teen goes the extra mile to show how much he cares for his son. Two news hosts of Fox4 at Dallas-Fort Worth:

"A suburban father is an internet hero for dropping in on his son's high school physics class to teach the kid a lesson. Poor kid. Brad Howard told his son, also known as Brad, if he heard from his teacher at Rockwall Heath High School about him talking too much in class, he would sit through class with him. Sure dad. Oh, last week dad got an email, he kept his promise. Daughter Molly posted a picture online."

Report begins with teen Brad speaking to the camera: "I walked in. I had no idea he was going to come, but I was saying hi to everybody and talking to all of my friends and I was like, 'hey Grant', and I heard 'hey Bradley'. And my dad was sitting in my chair."

Father, sitting next to Brad on a sofa: "As the teacher began to teach, all of the sudden I began to think to myself, what if she calls on me to answer a question?"

Hosts voiceover as father and son toss a football: "Turns out dad Brad was actually more uncomfortable about the whole situation than his son, but the teen said he learned a thing or two. He better take his dad's threats much more seriously from now on. When dad says he's going to do something, he's going to do it. I love that they're both laughing about it."