A classic comedy prop, where water can be made to flow out at will from an empty funnel. It has been a favorite with kid show entertainers for decades.  We now bring you this spun aluminum model at a very economical price. As the funnel is used with liquids, this makes it completely immune to rust. Just wipe it clean after use, with soft cloth or tissue, and it will retain its pristine finish. 

As a classic prop, most performers will have ideas of their own for its use.
Your presentation can be funny and wholesome or risque and naughty according to your audience and presentation style. 

Get a volunteer who will go along with you, and not mind “participating in a little fun, to entertain the audience.”

One common presentation is to have an audience helper on stage, have him drink a glass of water and have the water flow out through the funnel from his mouth, ears, elbow, or wherever you wish.

Yet another very effective presentation is to have a spectator on stage and pretend to "brainwash" him. Spectator is seated on a chair with two plastic tubes held by him, one to each ear.  Liquid is apparently poured into one ear (use a liquid vanishing prop like a Milk Pitcher, Foo Can or Wonder Glass) and emerges through the other ear from the funnel. This sort of presentation has scope for a lot of comedy.