世界第一快嘴Mac Lethal自编自唱,简直碉堡了有木有!这首歌其实来源于这样一封信:Dear Mr.Mac LethalMy name is Mrs.Francine,I'm a 53 year old high-school music teacher, and I love your YouTube videos. The problem is, I can't play them for my students because they contain too many ...