How do some ventriloquists drink water while speaking their puppet's voice at the same time?

It is well known that a master ventriloquist can do it, I have seen it done on a TV talk show where the ventriloquist drank water while his doll sang...But at least you showed me how to spell ventriloquist, thanks.

Adding in a link to show it is not physically possible.: http://ventdj.blogspot.com/2011/01/speaking-while-drinking.html

I took this from a rather long passage on the rudiments of ventriloquism.

"Having grasped the rudiments, we may then move on to the fine points, such as projecting your voice while drinking water. To do this you go out to some sleazy singles bar and get a beer stein that looks bulky but actually contains amazingly little liquid (no doubt you've come across these before). You raise the glass to your lips while concluding your spiel and pour the liquid into your mouth, making no effort to swallow. Since sound production takes place in the back and upper portions of the mouth, the liquid sloshing around your lower molars will not interfere. You time your rap in such a way that you finish at the same time you get done "drinking," whereupon you take your bow, swallow, and exit stage left. A child could do it."


Adding in a link: http://ventdj.blogspot.com/2011/01/speaking-while-drinking.html

The answer is, they don't. They use trick glasses to make it appear that they drank the water.

http://ventdj.blogspot.com/2011/01/speaking-while-drinking.html