Magician's handkerchief 

When you masturbate with both hands, alternating strokes so that you are going in the same direction in a continuous motion, like how a magician pulls on an infinite handkerchief.

Last night I lubed up both hands and gave myself a tug on the magician's handkerchief.

Magician's handkerchief by Adam Bones May 14, 2016

Magician's Handkerchief 

A particularly long hair you find in your mouth after indulging in a Fish Supper.

"Good Lord Bertie, it feels as though I've swallowed a Magician's Handkerchief!"

Magician's Handkerchief by LeTrenger June 14, 2009