It's Michigan State-Michigan week, which means one thing: there's going to be a lot of paint-scrubbing.

Michigan State students have been standing guard at the school's Spartan statue this week, preventing it from being vandalized like it was the week of the Oregon game last month. A blue "M" with yellow Greek letters underneath was painted on the Spartan's chest.

Well, Sparty is safe. But vandals -- apparently Michigan fans -- have struck another iconic campus monument: the statue of Magic Johnson near the Breslin Center.

Sparty Watch may have been successful, but Magic Watch was overlooked. From this morning. #Michigan fans strike pic.twitter.com/GcVPifZ5Df — Justin Rose (@JRoseWXYZ) October 15, 2015

All's fair in love and war? Remember that some vandals painted the block "M" in the middle of Michigan's Diag green last year and added the letters "S" and "U" in white next to it.

There is bad blood -- and lots of spilled paint -- in this rivalry.