Great previous review and very accurate. Difficulties being (1) setup - need privacy and can be messy (2) Can be tough to remove tape/wax to activate prop. However, is certainly very effective and fun. Try adding a few drops of food coloring to a few glasses. Let it dry. Now, have three different colors of water come from from the same funnel......

A classic trick normaly used inconjuction with other props like Fu Cans etc.

The down side is two fold, First you have to either set up before you leave home and that means travelling with liquids or you have to prepare it just before your show.

The 2nd is that you have to seal the air hole either with tape or wax, if it's not air tight the liquid will leak out, but if it's too well sealed then it's hard to remove whilst performing the trick.

However when it does work well it's baffling and very funny!
Suitable for all ages!