Description

This sound is very simple but can sound great on recordings. I don't want to get into a great debate about whether it is true beatbox as, yes, you guessed it, it uses a finger! Here it is used in the scratch at the end of the audio clip:

Method

1. To make this sound you simply waggle your finger quickly between your lips whilst making a sound - e.g. vocal scratching, talking, etc.
2. To make it sound effective, alter the pitch of whatever sound you're making whilst doing the waggle. Also, try altering the pitch in time with the movements of your finger.

In Context

Here's an MP4 audio clip of a finger waggle used in a SFX routine where it's been used to simulate tape spooling, as well as vocal and electro scratching: