A video showing a teacher in the eastern province of Erzurum greeting his students in different ways, echoing a video shot at a U.S. school, has gone viral on Turkish social media.The teacher said he chose this way of greeting his students in order to keep them alert for the school day.It comes after a video shot in Charlotte, North Carolina showed English teacher, Barry White Jr., greeting his each students in unique and funny ways went viral on social media.