Sound guided stroking. No toys required, but can be used if the tease is too easy. 30-45 minutes long depending on skill. 4,200 strokes minimum, I dare you to use lube.
Lots of stroking and edging! Somewhay of a longer tease. Have a good hour set aside to complete it. Republished after more glitches were found. Should be glitch free. PM me if more are found though :)