The urethra can be subject to narrowing. The stretch methods are to assure the passage stays open and allows for urine to pass through.
It is possible for the semen to drip out of the urethra and into the vagina. But it is NOT healthy for a woman to have intercourse with the penis entering her urethra! It is very highly likely that she will have bladder control problems (i.e., she will wet her pants a lot) because the urethra was stretched by the penis.
the urethra
The prostatic or membranous urethra
prostatic urethra
Dilating the urethra is done when there is a stricture (abnormal narrowing) of the urethra in order to make the urethra wider.
The urethra.
In my experience none at all. Some people get infections but I have had no issues with anything like that in all my years of playing.
The urethra; it is located between the clitoris and the vaginal introitus in the vulva.
urethra basically near the penis but its the urethra
Urethra has three regions in males, the prostatic urethra, membranous urethra, and the spongy urethra.
the urethra which runs down the center of the erect penis. The urethra is also used for urination in both men and women.
Urinary Bladder