#2 The Prank
Now that you have seen the video, you know for a fact that you can or you should never so something like this on a girl.
If at all you do something like this, high chances you'll end up having bruises on your body because she might wanna kill you after that
#1 The Requirements
Also, never ever try such a prank on someone who might just get angry and isn't sporting enough. As you can see, all you need is a bottle full of water, a coin and a cloth!
Once you have all this, you are good to go! Go and do this on your friends!