The noob moments that you have witnessed that made you /facepalm...

[Invasion]

This forum in general.

This.

But for the sake of posting, I remember this guy in Qufim Island casting Bind on worms (inb4 skill ups). Another one was this JP WHM in a PT that would always make sure to Silena himself first after Imps use that Silence move (Cannot remember name, Abrasive something).

Back in the day of lolsky I was the only BLM present for Suzy (they didn't have a rdm/drk). The leader at the time asked me to switch pt's so I dropped and flagged up, he had the attention span of a goldfish and forgot to invite me.. They popped, I /sit and watch from a distance asking them to invite me, nothing happened as the pt leader was a pld (who unsurprisingly was incapable of tanking it and inviting someone), it used CS, they died, I dropped pearl.

My favourite though has to be in Beadeaux, this one dude uses the mute with his whm npc out and huzzah! The npc Silena's him every time, I watched with a delightful grin on my face for many minutes.. or until he saw us there.