If someone don't play PvP, he don't know how often people use word "swarm" I remember mutants swarm, merc swarm, TTTLA swarm, russian swarm ect.
If someone is only "ncr noob" probably soon is only one good word to describe this season. 
I think youre wrong, dont you remember the mutant swarm at mines of southern cityes? it was a mess and n00bs whine a lot more than TC players.
My three words of the year:
SOON
SWARM
PROXY (or DOUBLELOGGIN)
plus PELVIC TRUST (it wasnt a phenomenon, but pretty funny thing to troll at NCR)