And then there are players like me, when I was young and stupid. I actually told my DM "You can't kill MY characters!!!" They were my ridiculously OP high levels I'd had forever.
He did.
Got real creative about it, too. For instance, behind one door was a big statue of a dragon, and every time you'd open the door and try to enter, BOOM!! you get hit in the face with a fireball, Ice Storm, etc. Nothing we did effected this thing in any way. When someone DID manage to get past the "trap", it turned out to simply be a hollow statue, and inside were 2 freaking goblins and a bucket of magic wands...
Or the ol disappearing floor trick- which dropped you onto a sheet of ice. "You hear a strange sliding/scraping noise rapidly coming closer..." <rolls dice> "Take xx damage and you're now sliding helplessly across the ice!" Turned out to be a group of Frost Giants playing ice hockey- with my Dwarf being used as the puck.
Then a room with 2 gigantic rust monsters- and a disenchanter. Which led to a great hall full of hundreds of orcs...
Yup, I never made that mistake again!
Funny part is, when it was MY turn to DM, he became the most paranoid player ever. Took forever to get through anywhere- because he had to check every square inch for traps, lol. There rarely were any, but it was highly amusing to see him so scared, lol.