Blue balls is a slang term for a medical condition called epididymal hypertension. This occurs when prolonged sexual arousal without ejaculation causes fluid to build up in the testicles. While blue ...

Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, PR China CAS-HKU Joint Laboratory of Metallomics for Health and Environment, The University of Hong Kong, Pokfulam ...