It lives!

"Dad?" Jacob repeated, more quietly this time, reaching forward to...

The cock and balls twitched. Jacob recoiled in surprise as the hairless scrotum tightened and the glans emerged completely from the foreskin. The disembodied genitalia then rolled backward, its penis levering into an upright position and becoming partially erect, the effort causing a tiny bead of clear precum to form on its tip. Then it did something truly extraordinary.

It began to move, shuffling forward, pushing first one testicle forward, then the other, as though they were little feet. In this way, it awkwardly "walked", its erect penis swaying back and forth, like a tiny drunkard with no arms and a mushroom-shaped head.

Jacob backed and watched it in disbelief.