>>1180738>>1180741LOL Urethral Fisting, that's new.
google Chase Union (medical supply and kink place) and look for sounds and dilators, also much much info about sounding. Do it right or don't do it. You can hurt yourself screwing around with stuff lying around the house.
I have Hegar dilators. Sounds are long with a curve at the end, they are designed to be inserted into a limp prick and can't be moved once erect. Dilators (technically cervical dilators) are for play.
Also reputable sextoy sites are carrying some urethral vibes, look like a tiny vibe tipped with a metal bulb on a stalk.