Mouse under the rug
While the penis can be stretched externally by pumping and pulling, it is also possible to stretch it internally by forcing it to enlarge simply by pressure on the exiting veins, thus inhibiting the outflow of blood by squeezing forcefully with the thumb and forefinger. The amount of pressure applied can easily increase the pressure in the distal penis so the the urethral opening is stretched open and the sensation is pleasantly painful.
How to do it:
Lying on your back in a semi aroused condition, place the index, middle and ring fingers over the base of the penis in the area of the bulbous cavernosus ( back near the anus and feeling it through the scrotum). Kegel and you will feel the bulbal part rise up . As it does so , let the fingers- starting with the ring finger and followed by the mid and index in that order- ride up over the kegel as it moves towards the head and , as it passes under them - like a mouse under a rug- close the fingers (ring, middle and then index) tightly around the penis. Each successive Kegel will increase the pressure attained in the penis. Done frequently and held for times of 1-2 minutes this is another effective way of increasing girth