Penis pumps are hard plastic cylinders that fit over the penis and create a vacuum using suction. They are meant to help a man get an erection or to simulate a blow job. Penis pumps won't permanently enlarge your penis; the changes are temporary. The dick you will have, at least for a little while after removing the pump, is not Sean Michael's porn dick, but a rather spongy imitation.

Penis Pumps work on the principle of vacuum aspiration. Through squeezing a bulb or working a plunger the air is sucked out of a cylinder that is over the shaft. As the air is suctioned out and a vacuum is created, your penis gets pulled into the cylinder and extra blood rushes into the erectile tissue creating greater-than-average engorgement.

Many men find the intense suction sensation to be an enjoyable addition to masturbation, while others like the looks of their dick stretched out in the cylinder. Some people use these toys in BDSM play, because the sensations are more intense.

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