Demanding people to have achievements before they can join a group and do what is necessary to get said achievement is also an ass move.
Did someone say [Thunderfury, Blessed Blade of the Windseeker]?
Anecdotal experience suggests that people don't really need ideas on how to accomplish this; they are already highly skilled in this area.
mounted on my mammoth and standing inside the little fountain in dala ah well so much hate in that one hour
Using leap of faith when someone wants to capture the flag so you can get it instead!
Train Set on Ultraxion. Oh, the memories..
I'm actually finding it interesting seeing what different people are posting-- some are legitimately disruptive or detrimental, and others are fairly benign. We've got the time-wasters and raid-wipers on the one hand, and then the "/e steals 3 Gold and 67 Silver from your pocket," people.
Using these little bombs that make everyone dance on your group/raid when they're trying to eat a banquet. You know, the things you get from Bling-tron.
cast Ancient portal to dalaran in any raids and ask if anyone wanted a portal..... watch how many people fell to their deaths.
used to lifegrip people on hagara during ice waves and watch them get killed.
put on aspect of the pact during lightning phase or during aoe dmg.
put hand of protection on a tank when he needed to taunt the boss.
Back when DS was the only LFR and groups had problems on spine. Kill all the tentacles!
Man there are some real dicks here I'm surprised. I hope you didn't do any of these things in progression raids, I could only imagine how angry my group would have gotten with a pug if they did some of the things posted here.