Japanese War Tuba 

An as of yet untested sex act in which the perpetrator, whilst being fellated by the victim, screams "BANZAI!!!!!" and rips a deafening (preferably wet) fart directly in the face of said victim. Extra points are awarded if victim is either drunk from excessive saki or is somehow dressed as a geisha.

"I no longer have a girlfriend after our night in Tokyo ended with a Japanese War Tuba at the hotel."

Japanese War Tuba by Gjers July 10, 2006

Anal Tuba 

When a person takes a hit off a cigarette, then holds the smoke in, spreads his or her partners ass cheeks and blows as hard as they can in their anal cavity in hope of the partner blowing the smoke out of their mouth.

Man, I can go for a good ol' anal tuba tonight.

Anal Tuba by Only_Marlow November 20, 2014

Sloppy Tuba 

Queefing in someones face while they lick your asshole.

Last night my boyfriend was feeling adventurous so I gave him a sloppy tuba.

Sloppy Tuba by WuJulius May 19, 2015

skinny tuba 

When you put the mouthpiece of a tuba into a girl's asshole during oral sex and she farts

You: I was going down on Jenna and she wanted to try out a new move, so I got my old tuba from the garage and we tried to skinny tuba.
Jerry: Woah bro, did it echo around the house like I told you it would?!
You: Hell yea it did bro, even the windows were shaking!

skinny tuba by Buns_the_rabbit June 16, 2017

dirty tuba

When you are banging a girl in the butt, when you pull out, she lets out a big ol fart in the note B flat.

While we were banging you'd think there was a marching band in the room, sounded like she brought her dirty tuba

dirty tuba by Drippy brown eye January 25, 2018

Fat Little Tuba 

A Tuba that is so big you cannot see what is in front of you while playing it

Fat Little Tuba Fat Little Tuba Fat Little Tuba, where did everyone go?
Other Musician: To the left!

Fat Little Tuba by pbbts October 10, 2012

cloudy tuba 

It's where a female jacks you off into a pocket pussy. Upon climax she quickly raises it to her mouth expelling all of the fluid into your face.

Bitch gave me a cloudy tuba last night, and it was music to my ears.

cloudy tuba by Cynabal July 12, 2011