The OD bass is a deeper variant of the outward click roll. This sound is often coupled with a throat kick and some added vocalizations for a crazier combination.

How it's done

Regular OD Bass

1. Learn the outward tongue bass or the outward click roll
2. Hollow your throat. TylaDubya says that dropping your adam's apple (or where it should be) will create a greater space in the back of your throat
3. Create a large space in your mouth and position your lips as if you were saying "ooh"
4. Execute the outward click roll!

Inward OD Bass

1. Wrap your upper lip around your top teeth like you're a toothless grandpa
2. Do an outward and inward click roll against the top lip

Other helpful tutorials

Amit's Tutorial

Rubik's OD Bass Tutorial

Madibeats' OD Bass Tutorial