testicles
Cyclists in tight shorts 'put fertility at risk'; says study
Men who wear skintight cycling shorts could be harming their chances of getting their partner pregnant, experts have warned.
Man born without penis to get £50k bionic manhood, first erection will last 10 days
Andrew Wardle was born without a penis and is preparing to have sex for the first time after being fitted with a bionic manhood.
Wounded soldier gets world's first penis transplant in US operation
A team of 11 surgeons operated on veteran, and transplanted entire penis, scrotum without testicles and partial abdominal wall from donor.
Bizarre sexual fetishes that people actually engage in
From getting turned on by hardened criminals to being aroused when being kicked in the balls, we list to you the craziest fetishes ever.
Loyalty in a relationship linked to size of testicles
When a man has no competition to satisfy the woman, his only needs sufficient sperm.
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