When your dick's size becomes so large that it reaches a
critical mass and begins to collapse in on
the balls.
The dick then retracts inside of the pelvis and forms a psuedo vagina.
"Hey Bobby
what's that glowing rod coming from your pants?!" "Oh thats just a dick implosion, an
interstellar mass larger than the sun retreating back into itself so as to hide its awesomeness from the world because the world cannot
understand it yet."