I did a quick Google search: Kobolds are household spirits in German folklore. They are mischievous household spirits that help with house chores or make noise at night. They haunt houses and live underground. They could also hide some household items and farm tools and could be angry if not properly fed.
So it must have been a strange experience for him. It's actually strange to see such things.
This GIF shows what kobolds look like, picture 3 of them in a trenchcoat, lol.
Also, "Three Kobolds In A Trenchcoat" could mean something deceptive as you may not know what's underneath. So an individual in a trenchcoat who isn't comfortable removing the trenchcoat should not be trusted. It could be two dwarfs in the trenchcoat.
There could also be a movie, cartoon or story about "Three Kobolds In A Trenchcoat".
Good morning Simplegame. I learned something new. Enjoy your day.
