A reference to pleasurable male masturbation. Jacking off. Wanking one out. Fapping.

Rhyming slang for Yank or Wank {which is the cut down version of wanker}which turns out to be the same thing

When your penis is masturbated by your partners hand in the inverted position to which you would normally pleasure yourself. I.e the hand would by placed thumb side down closest to the base of the shaft. Most commonly

preformed whilst partner is laying next to you.