I once ran a d20 Modern game with a headstrong player who didn't believe he could die. He challenged a pair of bugbears with shotguns; the player was completely in the 'wrong' as he was sneaking around the back room of a club, looking for dirt on the owner. When the bugbears threatened to shoot, he pulled out his own pistol and started shooting. And then the Bugbears let loose at point-blank range... I mercifully put him in the hospital rather than killing him outright. It taught him some humility.
Exclaiming "A Tiger?! In Africa?!" they look in some surprise at this animated tiger attacking them. One of the players gets the right idea and her character runs for the door. The other two players decide to have their characters stand and fight: one armed with an empty shotgun which he uses as a club, the other armed only with his fists.
Ah, Call of Cthulhu. What a great game you are.
Cheers!
"I disbelieve!"Exclaiming "A Tiger?! In Africa?!" they look in some surprise at this animated tiger attacking them.
PCs get mission to invade a red dragon's lair in an active volcano. No one stocks up on *any* fire resistance magic.
In the red dragon's lair: 5 of 6 PCs die. . . from fire damage -- 3 of those from *only* fire damage.
Bullgrit
"I disbelieve!"
Shooting at his gun, with shotguns from point blank range ... well, well he'd certainly end up de-armed, but he'd probably still have to go to the hospital for the doctors to patch up the stump.I would have considered having them shoot for his gun to disarm him.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.