Getting banned from Super Murder Mystery servers for RDMing the host, either unintentionally, accidentally because they walked into your stream of bullets while you were firing at someone else, or because they shot you first and because of that you thought they were mafia.
In any of these cases, the admins on those servers only care about enforcing rules if they get killed.
One time this guy walked in to the house I was in, attacked first and I retaliated, and he was all like "Wtf m8" and I said he shot first, but Mr. Perfect and dandy thought otherwise and banned me for 60 minutes.
Better than the classic Badmin permanent ban you get for such minuscule bullstuff, however.