Description
You know that dangly bit at the back of your throat? Well, that's your uvular. Everyone who snores can oscillate this!
Method
To make the uvular oscillation you must snore outwards!! You make a channel with the back of your tongue to direct the air over the uvular and the uvular flaps (oscillates) creating a fast 'kkkkkkkk' sound.
When this is combined with other sounds you can do everything from kick rolls to timestretched vocals to phones to helicopters to daleks!
For more tutorials visit http://www.humanbeatbox.com/learn