Make water drop sound with mouth

Description: There is a cool way to make a drop of water sound with your mouth

Instructions:
Pucker your lips together as if you are going to blow air. Then pull your tongue back and thrust it towards the front of your mouth to blow a quick bit of air out.

Now at the same time your tongue is forcing air out, flick the side of your cheek. This creates a slightly higher pressure difference in your mouth and just enough to create a slight whistling sound.

Pull your lips back just a little bit to change the sound of the whistle.

Result: If done right you will hear what sounds like a water droplet.