It is a US thing, although exaggerated for comedy. At least when I was in retail, I did several of those things.

I have several, but my favorite is probably “I am this group’s current resident expert on whatever the hell that thing is!”

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.

Arrgh! You and your wonderful cliffhangers!!!

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.

Wait, 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!

Thank you! This is something that many people forget, both players and DMs.

So says Friend Computer.

Indeed it is. It’s what I’m running at the moment.

Preface: I am not a doctor, this is just my understanding. Human bites are, on the whole, much worse. You have to consider that the human mouth is full of bacteria that the human immune system hasn’t already dealt with, so human bites can infect really bad.

Not that rats don’t have awful things in their mouths. Get it looked at either way.