Raid for the [x]'th time and no armor: [b]MMO - Massive Migraine Ouch[/b]
Team mates who try to melee bosses: [b]MMO - Mental Midgets Online[/b]
Anything PVP related: MMO - [b]Massively Masochistic Outhouse[/b]
Sounds like an MMO to me!
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Or just mini multiplayer online.