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a small metal round tipped rod in inserted into penis, much like a prince albert. except it can be removed by the user and not peirced.
Its called a "sound". Hegar Urethral Sounds Kit, 7-Piece (A974)
This set of curved, 8" probes is made of chrome-plated brass. Each probe in the series is slightly larger than the one before, and slightly larger on one end than on the other, for a total of 16 graduated sizes.
personally I wouldnt go futher than having my grilfreind use her, Tongue stud in the tip of my penis. with the ball lighty into the Hole.. It does feel exteamly wild.
Ive tried using a small stud as such alone while mastubating and found it difficult, other then the sensation while precumming and gliding the ball on the inside on the hole. Its OK. But not really fantastic.
Q-tip& lotion.. very bad idea, I could imagine you pee pain as to soap in the pee pee hole. ouch.....