TLDR - I looted a 385 cloak from Heroic Conclave. Raid Leader kicked me for not trading it.
Shortly after looting, the dreaded whisper came through:
"Derp Derp. u nEeD clOaK?" (Derps and caps added for comedic effect. Whenever someone types at me like that, I assume they are an incarnation of the Sponge Bob meme)
I didn’t need the cloak, but it was a nice addition to my transmog collection and I wasn’t feeling charitable that day.
"nyet" I typed back in a poor attempt at levity. This means “No” in Russian for my uncultured readers.
Sponge Bob was clearly not bilingual, because he immediately opened trade. Perhaps I wasn’t clear enough, so I walked away, closing the trade window. Not to be deterred, the Male-Draenai Shaman from Stormrage chased me down and opened trade again.
"I can has cloak?" Not word for word what he whispered, but you get the idea. Sponge Bob is now greedy Cloakburger Cat. This walking refrigerator would not take “no” for an answer.
"no" I typed back, too annoyed to think about what meme he reminded me of next.
"But you have a 410", SpoBo retorted. I suffer fools on occasion, but I draw the line at self-righteous fools. Instant Ignore Status.
Shortly after: "You have been removed from the group."
Judging from the time it took, my assumption was that greedy Stormrage Shammy was best buds with the raid leader and went on a whiny rampage about the selfish Warrior who wouldn’t share loot. RL agreed that SpoBo was entitled to my loot and kicked me without discussion.
Fortunately, I joined another Pug within 5 minutes and picked up another transmog piece a few bosses later.
Moral of the story:
While few and far between, people exist who think Pugs are their personal loot pinata. Additionally, there are raid leaders who will kick you to condone that line of thought.
Don’t be one of these people. If you can’t help it and just HAVE to be one of these people, then do the rest of us a favor by advertising it when your create pug group. “YOUR LOOT IS MY LOOT” works or even “SHARE LOOT OR GET KICKED”.
I’ll be happy to stay away and save you the effort of kicking me later.
Preempting obligatory “All pugs are toxic” dialogue:
This is the 1st time in 2 expansions that I’ve run into this, so SpoBo and Slappy the Raid Leader are a fraction of a minority. Pugs are great in general, but you’ll run into the occasional neck-beard with dubious social skills. Please don’t let my story dissuade you from pugging.