You can say Onew's lucky but in fact he won this game because he use his idea He challenged Eunhyuk because he want to know what will Eunhyuk do and he will control it
SJ mantra is: "how to make it funnier/more interesting?" rather than simply win, and now I see they mastered it since many years ago xD And they also have: "it's not that SJ is funny, funny things happen to them" Hyukkie is a perfect example of both statements xD
+Noona Luvs U Hallyu lol no. It's because Onew's challenging him when dubu place his pebble at the edge. Hyuk won't be able to hit it anyway that's why he was throwing the pebbles.