“Hey what dat noise?”
“What noise dat you talk’n bout Oloorin?”
“Sounds like fight’n, maybe we go see?”
“Wha you talk’n bout? We have important job, we guard chest in 10 x 10 room. We stay put.”
“Uh… ok, if you say. What we do if someone come through dat door?”
“Probably we die. Dat da life of two orcs guarding chest in room.”
Sound familiar? Ok, maybe I’ve gone a bit too far with some stereotypes, but how many DMs have designed a dungeon that had a room with a few monster that just waited for the door to open?