The act of measuring the circumference of the urethra with a urethra gauge is called urethra gauging, an assessment performed by a health-care provider. The act of dilating the size of the urethra...
Yes it is possible to stretch the male urethra.
This is usually done for either sexual reasons or medical reasons but both require similar techniques. The instrument used to stretch the urethra is...
Buy high quality sounds and use lots of lube. *note* if you don't sterilize everything you could end up with a bladder infection. Patience plays a large role in stretching the urethra. Listen to your...