Watch your back in Korea

A common practive amoung the younger folk here is called "ddong chim" (literally, shit poke; koncho in Japan). There is where the attacker sticks out one of their fingers and pokes an unsuspecting victim up their ass. If the attacker is extra evil, he or she will then smell their finger to see if your shit really does stink.

Much to my dismay, I have been attacked my this method multiple times by my students.