This trick makes for a bet you can't lose,all you have to do is get a buddy to touch the top of the water and when nothing happens,you do it with a soapy finger and BOOM!The water rushes to the sides!
Without letting anyone know, soap up your finger before anything else :)
Fill up that bowl of water!
Add pepper :)
When your buddy does it nothing will happen.
When you do it, this will happen and BOOM!! You win
This trick works on everyone, but for the best reactions do it to old folks and youngsters :)