when doing so, always remember to use lube, never force it will lead to tearing, and its not pretty, sanatizing is important, and make sure she is relaxed, there will be urine, so make sure that you are in a place easy to clean, and start with small, smooth, tapered objects, i started with a lot of small tapered paintbrushes, leading up to a taper candle, then i got a vibrator that has a fairly small tip, but gets quite wide, if this is meant for intercourse purposes, always restretch before trying to insert the penis, because it is quite dfficult because it isn't as stiff and won't want to copperate, I've seen a girl use a shoe horn, but found it unnecessary if warmed up first, just take it slow and careful, hope that helps, and enjoy!
You don't stick his penis up your urethra during frotting. You wrap your foreskin around it.
The urethra can be subject to narrowing. The stretch methods are to assure the passage stays open and allows for urine to pass through.
The urethra is lined by transitional epithelium in its proximal portion, which can stretch to accommodate urine flow. As it extends towards the external opening, the epithelium transitions to stratified squamous epithelium, which provides protection against abrasion. This change in epithelial type reflects the urethra's function in both urine transport and protection from external elements.
The urethra is primarily composed of a layer of transitional epithelium, which allows it to stretch as urine passes through. Beneath this epithelium, there is a layer of connective tissue, including smooth muscle, which helps facilitate the passage of urine. In males, the urethra also contains additional layers of erectile tissue, especially in the penile region. Overall, the combination of epithelial and muscular tissue allows the urethra to perform its function effectively.
When the bladder is full of urine, stretch receptors in the bladder wall trigger the 'need to go' reflex. The detrusor muscle that surrounds the bladder contracts. The internal urethral sphincter relaxes, allowing for urine to pass out of the bladder into the urethra. Both of these reactions are involuntary. The external urethral sphincter is voluntary. It must be relaxed for urine to flow through the urethra and outside the body.
the urethra
The prostatic or membranous 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.
The ejaculatory duct opens into the prostatic part of the urethra, specifically where the prostatic urethra meets with the membranous urethra. This junction is located within the prostate gland.
The urethra; it is located between the clitoris and the vaginal introitus in the vulva.
urethra basically near the penis but its the urethra