Penis enlargement is defined as all means and methods used to temporarily or permanently increase the size of the erect penis and its erectile tissue. Often the word is used in conjunction with a surgical penis enlargement, but it is not limited to surgical means and also includes manual training like jelqing, certain foods and supplements, devices and pumps to stretch the penis.
The vacuum pump. This is a cylinder that sucks out air. You stick your penis in and the resulting vacuum draws extra blood into it, making it erect and a little bigger. You then clamp off the penis with a tight ring -- like a tourniquet -- to keep the blood from leaking back into your body. What are the drawbacks? The effect only lasts as long as you have the ring on. Using it for more than 20 to 30 minutes can cause tissue damage. This is sometimes used as a treatment for erectile dysfunction, but has not been proven to actually increase the size of the penis.