Here is an article that explains how to achieve a bigger dick using a combination of injections and pumping:
US7671091B2 - Penis enlargement - Google Patents
A method for causing a permanent increase in the length and girth of a male subject's penis, the method comprising treatment comprising the step of (a) administering to the male an effective amount of a vasodilator selected from the group consisting of a vasodilator per se and compositions...
patents.google.com

