The part where Baekhyun keep trying to pronounce butt in Chinese is so funny. And as Lay walked out, he kept saying "Lay, butt~" and then moves on to "Lay, butt very big" and "Lay, butt cute and very big" (lol) Lay started out asking if they are talking about butt, and then to say they are very dirty-minded. It is so cute to see Lay touched his butt briefly as Baekhyun said his butt is big.
