Panthers center Ryan Kalil surprised Jordan Gross with a barbershop quartet during his official retirement news conference on Wednesday.
Gross first announced on Tuesday he would be retiring after 11 seasons.
"It's time for me to go," Gross said. "I learned in college you never want to stay at the party too long or bad things will happen."
On Wednesday, Kalil sang along with the barbershop quartet at the end of the news conference. Here's how the song went:
"Happy Trails to you, my aging and departing friend. Happy Trails to you, I can't believe it's the end. No more cares about the spin or speed or bull rush. So try to not get knocked back while in retirement. Happy Trials, to you, you'll be missed on third-and-10."