Pass the hose to your friend and let him do it....because he’s just been standing there telling YOU how to do it....
When you show this technique to children, they see it as magic! Place the hose in the target liquid so that the hose fills. Then plug the end through which you want liquid to run and pull that end out and place it lower than the liquid to be siphoned. Release the plug and watch the eyes light up on the children ... works every time!