So let me get this straight. If you pump how long does your cock stay big? Can you get a rigid erection imediately afterwards and use it on your woman? i.e. can I pump before my girl gets to my house and then give her a massive surprise? Or does it get worn out like during jelqing? Another question, is the increase in size garunteed, or only for some people? I use clamping as an example where some guys don't expand during while others get great expansion.
But does it get rigid and can you fuck with it within a few minutes of removing the pump?