The Ohio State mascot Brutus trolled Lou Holtz after Ryan Day's Buckeyes won the college football national championship vs. Notre Dame.

Fans couldn't help but make all kinds of jokes about Lou Holtz and Ryan Day after Ohio State football's win over Notre Dame.

Ohio State has embraced their new rivalry with Lou Holtz, and some Buckeyes fans trolled the legendary Notre Dame coach with an awesome sign during the College Football Playoff National Championship game on Monday night.

Former Notre Dame head coach, Lou Holtz, is at it again. The former Fighting Irish head coach loves to keep his name in the headlines any way he can, and now he’s using a beef with Ohio State’s Ryan Day to do just that.

Lou Holtz may not get to celebrate a Notre Dame title in Atlanta. Notre Dame is down 31-23 to Ohio State in the National Championship Game. The Fighting Irish allowed 31 straight points after opening the contest with a 15-play touchdown drive that lasted nine minutes and 45 minutes.

Here's a look back at the Ryan Day-Lou Holtz feud and why the Ohio State football coach called out the Notre Dame legend in an interview in 2023

Brutus Buckeye and Ryan Day fire back at Holtz's controversial comments after the Buckeyes secure the national title.

Ohio State RB Chip Trayanum plowed through the middle of Notre Dame's defensive line for a 1-yard touchdown on third-and-goal with one second left on the clock to seal the win. During a postgame interview with the NBC broadcast, Day, unprompted, went off on Holtz in a clip that went instantly viral.

"Where is Lou Holtz?"  That question is going to be asked all week leading up to the College Football Playoff championship game between No. 7 Notre Dame and No. 8 Ohio State at Mercedes-Benz Stadium on Monday.

The Buckeyes were ranked No. 6 coming into the game ... This article originally appeared on The Columbus Dispatch: Lou Holtz takes shot at Ohio State's Ryan Day, picks Fighting Irish ahead of CFP championship

It should be noted Holtz was an assistant at Ohio State during the 1968 championship season under Woody Hayes, so he has a little Scarlet and Gray in him as well.

COLUMBUS, Ohio — Ohio State coach Ryan Day and former Notre Dame coach Lou Holtz never coached against one another, but they have an intertwined past. After a come-from-behind 17-14 win by Ohio State against Notre Dame in 2023, Day took the moment to give a passionate rant during his postgame interview on NBC, with Holtz as the focus.