What's the dumbest Reddit ban you've heard of?

The wannabe tyrants of subs like OffMyChest who banned people for simply posting in another sub, regardless of context, and the fact that Reddit didn’t shit about it despite it being against their own ToS.

Super lazy form of “moderating” to not just wait for someone to actually be a dick in your sub. Most people receiving the ban never heard of your dopey little sub until they got auto-banned for the crime of participating in an unrelated sub.