Crystal Balls is a novel jerk-off technique for which you will need a drinking glass to dangle your balls inside as you stroke away. This boy jerking technique can also stimulate to stimulate the perineum area as well.
First position yourself on the very edge of a bed and let your balls hang over the edge of the bed.
Next, get going with your basic jerk-off technique, ensuring that your balls are jerking downwards while you hold the glass right against the area under your balls so that they are just dangling into the mouth of the glass.
With this jerking off technique it is also possible to stimulate your perineum which adds a definite extra sensation to the session.
NOTE: By way of variety you can lean back on the bed a little and use the glass or put pressure further back in the area of the rectum/anus.
Also, avoid using a thin lipped glass in case of breakage, use a durable drinking glass.
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