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.
by Telemarooners December 2, 2019
mugGet the turn your bitch into a tubamug.

Share this definition