Urethralism
Encyclopedia
Urethralism is sexual activity that involves sexual stimulation
Sexual stimulation
Sexual stimulation is any stimulus that leads to, enhances and maintains sexual arousal, and may lead to ejaculation and/or orgasm...

 of the urethra
Urethra
In anatomy, the urethra is a tube that connects the urinary bladder to the genitals for the removal of fluids out of the body. In males, the urethra travels through the penis, and carries semen as well as urine...

. This may include paraphiliac activities such as the use of urethral sounding
Urethral sounding
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...

 and urethral catheterization for sexual purposes.
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