San Francisco 49ers rookie defensive lineman Nick Bosa got out of character with his celebrations last Monday, first staging a flag plant heading into halftime against the Cleveland Browns and then literally planting a 49ers flag in the end zone following the team's 31-3 win.

Normally reserved, Bosa was only doing that to get back at Browns quarterback Baker Mayfield, who planted a University of Oklahoma flag at Ohio State's midfield back in 2017 when Mayfield's Sooners defeated Bosa's Buckeyes.

Now that Bosa got his long-awaited revenge, he says he will return to his signature “shrug” sack celebration for the remainder of the year, according to Matt Barrows of The Athletic.

And if Bosa wants to keep the flag plant as his main celebratory action? Head coach Kyle Shanahan has no problem with that:

“He didn’t do it in [Mayfield’s] face or anything like that,” Shanahan said. “It’s something that stemmed from college, and it was all fun and games. And I think Bosa definitely earned that. As long as you’re doing it and not taunting someone where you’re jeopardizing your team with a penalty. It’s something I wish I could do. It’s fun.”

Offensive tackle Joe Staley has even recommended that Bosa keep the flag plant, but it seems like the first-year pass rusher is ready to move on.

Through four games this season, Bosa has logged eight tackles, three sacks, a forced fumble and a fumble recovery. The 21-year-old was selected by San Francisco with the second overall pick of the NFL Draft back in April.

Meanwhile, the Niners will look to improve to 5-0 when they take on the Los Angeles Rams this Sunday.