Old mIRC rpg. Cyberpunk/Shadowrun/Escape from L.A./just a little of everything post-apocalyptic game based in a wall-enclosed Los Angeles. Big central park area, polluted all to hell, three-legged ducks and shit.
I had played for quite some time, roughly in the top three most powerful characters on the game. Largely not important to the story, but just an indicator for future reference. The following wasn't my act of mean, but I merely offered a few suggestions and acted as a glorified henchman for the event. This game also had something called 'bios', I think? So basically if you died, it'd shock your system and you'd pop back up with like 20hp or something - usable once per scene, basically. It's been nearly 15 years or so since the events, so they're a bit fuzzy. Anyway, practically everyone has Bios. It's just one of those things you'd get your character hooked up with pretty early on. The game functioned on 'Lives'. Basically like a video game - you got 25 lives for the duration of your character. Reach 0 lives and the character's dead, permanently.
So my rl friend's character has a PC that he's all in twu wuv with. We'll call her Candy. They're bound to get married. Yadda, yadda, yadda. His PC discovers that she's getting a little side action going on and naturally his character is furious over this, but he keeps quiet about it. Doesn't confront her or anything like that. So he concocts a plan to get revenge. Ron was a mage or necromancer or something, a couple spells and he could really wreck someone's world or basically alpha strike them to the point of "death".
His character asks her to marry him. Yes, yes, god yes! she replies. So they make the arrangements, they set the date for the wedding scene. Meanwhile, rl friend(we'll just call him Ron) has his character going around talking to people. My character(we'll call him Simon) being one of them, a few of my character's pals, and some of Ron's pals. Incidentally Ron and Simon enlisted a roster of roughly seven of the most powerful characters in the game for Ron's little plan.
So the wedding begins. Outdoor wedding in the park. Three-legged ducks quacking around and stuff. The pollution smells excellent that day. Simon(again, my character) along with all of our recruited pals are in the audience, save one of them. The best shot in the game is far, far, far away. So Ron and Candy are doing their whole vow exchange thing. Ron's gradually transitions from all lovey dovey 'You're my moon and stars' expressions to 'I know what you did and that is very, very not okay'. Ron casts a couple spells, Candy drops dead in a heartbeat. Boom. Bios kick in. She leaps back to her feet all 'Raahh I AM ALIVE'! and BOOM. The sniper enlisted drops her again. This ultimately drops her to 2 remaining Lives.
Naturally Candy's pals are immediately prepared to go on the offensive, when suddenly some of the most powerful characters in the game are on their feet and reaching for their own weapons in support of Ron. Candy's pals quickly realized that they were outmanned, outgunned, and generally going to end up dying a lot themselves if they wanted to try anything. No other deaths that day, but it was great to see the overall plan go off without a hitch.