What does uncle frank mean in gay sex?

What is uncle frank?

slang for someone who is masturbating.

Definition

Rhyming slang was popular, in fact the secret gay language, known as Polari, was based on that use of different words, in rhyme, to have a sexual connotation.

As well, it was used to protect their orientation, so words had double meanings, mainly sexual when talking to another fellow Gay.

Related Terms

See also masturbation.