Skin Tuba 

slang for penis, like skin flute, but people with big dicks play the skin tuba, not to be confused with skin trombone

Ronny has a big dick but he cant get any chicks so every night he plays the skin tuba

Skin Tuba by fry1077 March 30, 2011

Skin Tuba

the art of while eating ass, you begin to blow, as if you are giving them a raspberry but on their asshole. the other partner will then make Tuba sounds like from the song from veggietales

me and my girl just finished watching a classical movie, inspired me to play the Skin tuba

Skin Tuba by FaggimusPrime November 25, 2025

Skintubation 

"An action in which one inserts their penis into the oral airway, like a laryngoscope, and places the head 3-4cm above the carina"

Check out thot. With those lips she begging for a skintubation.

Skintubation by Mursenary12 June 9, 2017