Sounding or urethral sounding is the medical use of probes called sounds to increase the inner diameter of the urethra and to locate obstructions in it. Sounds are also used to stretch the urethra in order to receive piercing. Urethral sounding and urethral play are also used to refer to this practice in a sexual context.
Urethral play can involve the introduction of either soft or rigid items into the meatus of the penis (as well as further in). Objects such as sounds are usually only inserted into the penis to Cobb’s Curve (considered to be the "Safe Area" of the urethral tract) and can usually be easily retrieved. Other toys and items, such as catheters, may be introduced deeper (in some cases even into the bladder). Some items may even be allowed to curl several times or expand within the bladder. This action in the male may be directly or indirectly associated with stimulation of the prostate gland and some types of bladder control (BDSM).
- BMEzine.com article with links to images of urethral sounds
- Paper on use of prophylactic use of steel chopstick
- On medical use of urethral sounds
- Shows different urethral sound instruments and their use; explains about different size metrics and types
- Go Ask Alice!: "Cock-stuffing"
- Peer Group, a non-profit foundation
- "Playing Doctor" Savage Love, October 18, 2001
- Hardy Haberman, Fetish Diva Midori. The Family Jewels: A Guide to Male Genital Play and Torment. Greenery Press, 2001. ISBN 1890159344.