Also, I've noticed that the sound produced is completely different.
A similar computer/sex term is "double clicking on the mouse" which also means female masturbation.
AC (who is female): You would not believe. I found a kick-ass .zip of photochopped fake Johnny Depp porn. It was a really big file, too. I had to spend almost two hours rolling the mouse wheel just to get through it.
HMB: Dear me. Airing the orchid?
AC: You bet. I got my daily musical practice of playing the upside down piano.
HMB: Feeding oats to the pony?
AC: Tickling the toothless gibbon.
HMB: Typing in the gussets.
AC: Paddling the pink canoe until it leaks.
HMB: Finger painting the ham sandwich.
AC: Stirring the mixing bowl.
HMB: Petting the cat.
AC: Fingering the bald suspect.
HMB: ... So, um, can I borrow that .zip file? ... For, erm, personal reasons...