How to speak fluent Japanese without saying a word

I recently watched this series of YouTube clips by Ken Tanaka - assisted by RemiFebruary - which I find to be pretty hilarious and worth sharing.

He made a lot of videos with the intent of discovering his biological parents though I can't vouch on how true his claim is. Nevertheless, the How To Speak Fluent Japanese Without Saying A Word series has 3 clips at the moment so do enjoy them!

Part 1:


Part 2:


Part 3: