@azrendelmare
@ttrpg.networkWait, they don't use magic items!? What the actual fuck? Of course it'll be hard if half the party literally can't hurt it!
Nice! I had a 3.5 campaign I was running once where one of the major plot points was going to be a guy who was cloning Tarrasques and experimenting on them, but the game fizzled out because of me falling down on the job.
Funny you should mention dragging a door, some friends and I managed to manifest a magical cart under some huge adamantine doors so we could cart them away. It was lovely.
I have several, but my favorite is probably "I am this group's current resident expert on whatever the hell that thing is!"
It is a US thing, although exaggerated for comedy. At least when I was in retail, I did several of those things.
I recently played A Link to the Past for the first time, and several dungeons have rooms (and even big treasure chests) that are not necessary for completion. Still did it, though.