The years the things happened in your list of Ohio State Hijinks:
1973
2004
2025
2025
The years the things happened in your list of *ichigan hijinks:
2020s
2020s, or are you referring to 2013?
2017
2020
2020s
So you had to go back 50 years to come up with 4 of Ohio State's hijinks.
You had to go back 9 years to come up with 5 of *ichigan's hijinks.
Plus, you included the mascot writing Script "Ohio" in the snow? That's not a hijink - the team has no control over the mascot. Yeah, they can probably suspend him if he's breaking rules, but no one on the team approves what the mascot does. Plus, it was writing in snow. That'd be like getting arrested for vandalism if you "write your name in the snow".
Plus plus, tearing down the banner - I don't know if *ichigan does that for every game, but that's really lame that they do that. That's like Ohio State cheerleaders surrounding the visiting team and running out with the "O", "H", "I", and "O" banners as the visiting team comes out. They don't want to celebrate anything Ohio State and non-*ichigan teams don't want to celebrate any "M" logos.
Plus plus plus, that one you listed for *ichigan and starting brawls in the hallway, you forgot about the part where they bitch and whine that the other team should be charged with assault afterward.