Playing Spelunky 2 online with strangers.
The others (probably more experienced than I) had both died, presumably in battle with all the shopkeepers we'd been robbing. I, picking up one of the many shotguns lying around, forged ahead and managed to make it to the next zone and resurrect one of them, gunning down a couple more shopkeepers on the way. Unfortunately, they somehow died again as we were fighting the first boss.
I finished said boss off, derped around for a bit, then found my way into the next area. I won't spoil anything, but it's a pretty inhospitable place.
I took my time. I looked around, figuring there'd be a coffin containing a new body for one of my teammates somewhere near the start of the stage. I peered downwards, and aha! There was one below that was easy enough to get to. I dropped down, carefully dropped my shotgun nearby (I've seen other players open coffins with shotguns but it still just makes me friggin' NERVOUS) and approached the coffin.
One of my impatient fellow explorers chose this moment to use their ghostly powers to unleash a blast of freezing air on the coffin - at the same instant I swung my whip to open it. The flash-frozen new body of my comrade crumbled into ice cubes just a split second after it came into existence. I didn't even have time to see which of the others it was.
There was one horrible moment of silence as my brain processed what just happened. My character stood there, unmoving, and it was easy to imagine a mortified, horrified, stupefied facial expression forming behind his smoked glasses as he realised what he'd done.
Then my thumb slammed the PS button and I went in a frantic whirl up to the "close application" option, fleeing the shame and the fury of my compatriots and hopefully closing that dark chapter of my video gaming career forever.