Gubba nub nub doo rah kah means 'Whatever lets you sleep at night' in Birdperson language.
From the 'Rick and Morty' show. In the episode Ricksy Business.

My people have another saying-- "gubba nub nub doo rah kah". It means, "whatever lets you sleep at night".

gubba nub nub doo rah kah by Akneess April 10, 2017

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Gubba, Yubba & Schmubbly-Bubbly

Any triumvirate that is wacky in nature and bumbles a lot.

The Dark Wings from the Tales series are a prime example of Gubba, Yubba & Schmubbly-Bubbly

Gubba, Yubba & Schmubbly-Bubbly by DoodooMan January 12, 2009

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Gubba goo

An adorable short girl with chubby cheeks that makes you geek

I love that girl she’s such a gubba goo

Gubba goo by Keironnironron May 30, 2019

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