Is that the trolling these days? I haven't played multiplayer games for a while now (one with a lot of people, not just 2-4 or something) but it doesn't seem that impressive to me.
Back in the days of the first massive Counter-Strike servers (Internet grew enough to make them accessible to a lot of people) me and friend formed a clan. So the six of us joined this server with around twenty people but it turned out we couldn't play together. So we joined different teams (obviously) and played to the best of our abilities to survive till the end, once it was only us remaining, we just trolled the entire server by dancing around the bomb site, play fetch with weapons and generally not killing the other team. Everyone was mad and a few even quit because of it. Gee, I didn't know 5 minutes was too ling to wait for another round.
Ad then, I remember the days of good old Diablo 2, when the Lagamancer was a viable and extremely evil build - name a necromancer and invest in all summoning spells, enter a server on a high difficulty where people will go after cows or something else challenging, rise your horde and teleport to them "Guys, can you give me a TP?" - the extreme lag caused by suddenly 50-60 new things arriving in the area, meant that everybody was most likely dead by the end of it. "But I just wanted to help you guys".
Diablo 2 again, it was easy to convince noobs that they can do by pressing Alt+Ctrl+F4.
Same game, a friend of mine was boasting about his character which was edited. Paladin, I believe, the character with charge and he was fond of it. So I just slightly edited a Necromancer - only skipped the levelling, nothing else, and offered a duel. So, my friend charges me, convinced that I'm dead (he was doing something in the order of 20K minimum damage and my character had ~1000) but Iron Maiden (curse - he returns damage to him when he attacks. Amplified) and Bone Prison (has to attack it to escape) taught him humility.