JackLuis
Literotica Guru
- Joined
- Sep 21, 2008
- Posts
- 21,855
Plot bunny? I suppose there are twisted writers who would get off on a anti-clockwise spiraled penis. This one's for you.
Coloured scanning electron micrograph (SEM) of a male bean weevil's (Callosobruchus maculatus) penis. The tip (top centre) is covered in hard spines, which unfold in the female's genital tract during copulation. The spines penetrate the lining of the tract, leaving numerous puncture wounds.