What is urethral sounding?

Urethral sounding is the insertion of an object into the urethra. They are high polished stainless-steel rods with rounded tips and handles that come in various sizes that are close to one another – differing in diameter by half a millimetre or less in most cases. Their lengths vary from 8 inches to 11 inches depending on their usage and design.

Medically, their purpose is to gently and gradually enlarge the urethra thereby removing any blockages, dilatation of strictures or obtaining access to the bladder in urological surgery.

In fetish medical play, fetish urethral sounding is a form of sexual stimulation and exploration for both women and men, and I just realise it is also called “cock-stuffing”.

Anatomy of urethra

The urethra is a part of the body found on both the male and female genitals. In men, the urethra is around eight inches long, and runs along the length of the penis, through the prostate, and up to the bladder. It carries both urine and semen. In women, the urethra is much shorter, usually being around two inches long. The female urethra connects directly to the bladder, and only carries urine. Both sexes have a urethral sphincter, which allows them to control when urine can exit the body, and men have a second one to restrict urine during ejaculation.

Anatomy of Urethra

Fetish urethral sounding play is not rocket science, it is a deeply satisfying and intense experience if done correctly. However, it is also a sexual activity that brings certain risks.

Hygiene and safety for fetish urethral sounding:

Sterilisation: Always sterilise your tools in medical play sessions. If you do not want to invest in an autoclave there are other products such as Virkon and Perasafe which is excellent for sterilisation. I will write another blog about sterilising instruments soon. Rinse the item with mineral water after sterilising. Do not use tap water.

As soon as the item is exposed to air it is no longer sterile so sterilise it just before you use it to minimise risk.

fetish Urethral sounding mistress London

Hands and gloves: Scrub your hands with antibacterial soap, don’t forget to scrub your nails. On top of that use individual packed sterile gloves for extra protection. It is important to know that non-sterile gloves (non-individual packed latex or nitrile gloves) are typically used for non-insertion procedures and examinations i.e. anal play. Sterile gloves are used to carry out insertion procedures such as sounds and catheterisation.

Clean the area: Clean the penis with sterests unisepts especially the external opening of the urethra (meatus) .

Sterile lubricant: Make sure you use lots of lube to help the insertion be nice and smooth. Use water-based sterile lube sachets. Do not use oil-based lube as it is hard to expel afterwards and encourages the build-up of microbes and results in infection. Do not use saliva as lube.

Choose the right size: Depends on the sub’s experience. I always start with the appropriate size and work my way up to avoid overstretching the tissue.

Go slow, don’t force: Insertion is one of the most sensitive parts of the urethral play and it should be done with care. Insert carefully, gently guide the sound into the urethra, don’t force, take your time, be mindful of how your body feels. Stop anytime if there is pain, resistance or “block”. Do not wank the sound in and do not wank when the sound is inside the urethra. I have seen too many people do this, they obviously overlooked the risk of urinary tract infections, tissue damage and false passages.

You shouldn’t try sounding if:

  • Any abnormal discharge coming out from the urethra
  • Outbreak of STDs
  • Recent UTI
  • A history of UTIs
  • Difficulty passing urine
  • Problems with sounding/catheterisation
  • Prostate gland enlargement
  • History of surgical treatment for prostate or bladder cancer
  • A prostate condition like prostatitis, benign prostatic hyperplasia or prostate cancer.


Different types of sounds I use in my fetish urethral medical play sessions:

I always purchase surgical grade stainless steel, titanium or silicone made products.

Hegar sounds:

This is technically a uterine sound, rather than a urethral sound. Hegar sound are used to induce cervical dilation in order to gain entry to the interior of the uterus, they are widely used in gynaecology to open up the cervix.

Hegar sounds are truly a good choice for a beginner who wants to try urethral stretching because of the shape, I start with the second smallest sound in the kit and build the way up from there.

I use Hegar in most of my medical play sessions.

Rosebud sounds:

Also called Bake or bullet sounds. I like them because they are thin, non-intimidating and relatively short. The tip can be used for targeted stimulation of sensitive urethral spots or it can simply provide additional stimulation to the urethral walls during use.

There are other types of sound I would like to bring into my medical play sessions such as Guyon but I would like to investigate more first.

I recently wrote a new blog about the Van Buren sounds << you can read it by clicking there

Hope you enjoy reading my blog. If there is anything you would like me to cover in medical play (within my knowledge) please email me I will consider it.

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