A photo taken during SS3 in Vietnam has become a hot topic among fans.

As you can see in the photo,Dong Hae is fooling around with a naked member (fans said that that is Siwon,judging from his muscular body) on the stage.

Take a look at Dong Hae's hand,he was actually grabbing his chest when this photo was taken.I wondered how the victim responded,for those who attended the concert,please share some stories with us too!

Photo credits to Kyurified @ Twitter!