Pervin Mervin

A phrase used to describe discreet female masturbation.

An act of rubbing ones vagina on another object discreetly.

It is not believe that an orgasm can be reached when Pervin Mervin, but rumours have been heard of rare occasions where this may happen.

I caught her Pervin Mervin on the Rocking horse..
Have you seen Lucy? She's probably Pervin Merivn somewhere.