Urethral sound
Urethral sounds are medical instruments used to increase the inner diameter of the urethra. The goal of their use is either, when used medically, to correct an abnormally narrow urethra; or, when used as a sex toy, to produce sexual pleasure per se or to enable the insertion of other objects into the urethra for sexual pleasure. Sounds are long, metallic rods with a range of girths - the point being to start with a small girth and work up to larger girths. The urethra is exposed to far more nerves per unit area than the outer penis - hence some men find the sensation of urthral stimulation far more pleasurable than more traditional sexual activity - this is especially true among those with certain forms of penile damage. A urethral sound may be connected to special electrical device for use as an electrode in erotic electrostimulation.
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