7:35 they're playing a game where each of them picked a sign of an animal to imitate. Jungkook is an ostrich, Jin is an alligator. Yoongi is a rooster etc etc. When somebody does your sign then you have to repeat your sign and then choose somebody else's and it moves to them. If you're too slow picking up on your own sign or if you get flustered and forget the signs then you're out. And as always with Bangtan.... chaos ensues.
