Urethral sounds are a type of sexual toy used during sex and intimate play. "Sounds are designed to be inserted into the urethra and can provide an intense and unique form of stimulation. Similar to the intense feeling a man gets in his penis during ejaculation - only more intense.
A "sound" is also called a dilator.
By experimenting with urethral sounds, you can explore new forms of pleasure and sensations during the act. It is important to be careful and follow the instructions carefully to avoid injury. Using urethral sounds requires time, patience and a good amount of communication with your partner to ensure a safe and pleasurable experience.
Available in many variants. You can see some here: Sounds / Dilators