"You pull, you tank" is a bad mentality

[hunkygladiator]

That actually doesn't constitute MPK because the one dying is directly causing it by intentionally drawing aggro.

The MPK they're referring to is things like dragging enemies over other players that are out of combat so AoE attacks on you end up hitting and killing them. Things well known in FFXI like taking Serket for walkies over EXP parties in Garliage Citadel or dragging bombs over to afk ppl outside Jeuno with things posted for sale so they all die when it self destructs. Or the PLD that finds the guy in the Nidhogg alliance that forgot to /blockaid and proceeds to trigger Spike Flail by standing behind it and casting Cure IV followed by Invincible...

How do you prove they're intentionally doing it

[Celine_Aurora]

How do you prove they're intentionally doing it

Because if you drag the mobs on top of the tank directly and they refuse to use AoE or move away, it's pretty obvious.

Also because YPYT types just can't resist spelling it outright in chat to taunt you before or after letting you die.