This video from 2008 has been steadily growing in popularity for years, but has only started to really go viral just recently.  is an 3rd and 4th grade English in South Korea, and had her class sing the classic English version of Happy Birthday to her friend Laura on video.

But at the end, one boy wishes Laura a bad word and gives her the finger, which goes entirely unnoticed except for one girl who gives the boy a disapproving tap on the head.