Can u tell some pranks from the girls playing each other in their dorm,on stage または on variety shows?

Yuri got some insects and 動物 as a fanmail and she put each one of them behind something. She put a ラット behind a trash can with only its tail sticking out. Someone found the ラット and screamed. Snsd was on this variety 表示する and they were talking about ghosts and she sneaked up behind one of snsd's members and 発言しました boo! And everyone jumped. BOy, YUri can be quite a prankster if she wants to be one!

I'm not sure if its much of a prank,but Jessica takes pictures of the members undressing. According to what Sunny 発言しました haha.^^