cosmic tuba 

when a tuba is launched into outer space

"hey look! its a COSMIC TUBA!"

cosmic tuba by nickgurr507 April 26, 2019

Play the tuba 

To blow into a fat chick's asshole.

I want to play the tuba all night.

Play the tuba by gascanlincoln December 21, 2014

wet tuba

When you ejaculate in your partners anus , then your partner releases the cum through passing gas

Honey would you like a wet tuba

wet tuba by Film layers February 27, 2017

Play the Tuba 

Another in a long line of euphemisms for blowjob.

She can really Play the Tuba.

Play the Tuba by RVert October 6, 2011

turn your bitch into a tuba 

To insert a brass mouthpiece (a tuba mouthpiece is ideal for accuracy, but a trombone or high wind will work) into a woman's vagina and blow into it as if you were playing.

Can also be phrased as "turn this bitch into a tuba," if she is not already in a relationship.

You know after the competition I'm gonna turn your bitch into a tuba.

turn your bitch into a tuba by Telemarooners December 2, 2019

Baby Tuba 

baby tuba is something that you hear when you are very tired and your very awake friend is blabbing at you. Basically, it is when you hear the wrong thing.

Tina: We should get high.
Summer: Wha, baby tuba?

Baby Tuba by rifka123 May 3, 2009

Santa's Tuba

A Person who can fart in 56 secs.

My mom is a Santa's tuba!

Santa's Tuba by xX 44100 Xx March 18, 2021