Once I had a talk with... ekhem... a friend and we both disagreed on Western and Korean sense of humor. I said I can't sometimes get it. Today I got an email with only one link.
I died laughing hysterically while watching those videos. Korean humor at its finest. No, not even a humor, the best trolling (except for Facebook Official, of kors).
Be prepared for something really, really hilarious. Koreans do know how to laugh at themselves, me seems.