I have seen a fair amount of Ninjas falling (pun not intended) in love with the floor recently, but to be fair, I've seen a lot of stupidity all around lately.
-WHMs that don't understand they need to bring up protect on people who died from the previous fights
-Tanks that don't understand what it means to hold aggro instead of humping the bosses leg for ten minutes in hoping that it starts swatting at them first
-lolBRD with "What's foe's requiem? I'm supposed to use songs?"
-Scholars that don't bother to resummon Eos after she gets ripped apart by adds
-OT that don't understand they need to GET adds
-Tanks in general
-Why do I keep running ST
-Oh god please send help