The male bean weevil is neck and neck with the duck for meanest penis in the animal kingdom. Though it's a beetle of moderate stature, the bean weevil has a penis that is covered in hard spikes. Researchers have found that mating scars the female beetle’s reproductive tract, resulting in traumatic insemination that makes it difficult for her to mate with other males. That's just evil.
Related: Eight Secrets You Need To Know About The Penis
Related: Eight Secrets You Need To Know About The Penis
