One of my favourite things to do is urethral sounding. Those of you that know me already know that I teach classes in it.
The most important aspect being sterilization and safety. If your going to insert something into your cock make sure it's clean. Any bacteria will give you a nasty painful infection. That will then result in a Doctor's appointment and a interesting rendition of what you were poking inside your cock. Please do use urethral sounds, penal plugs or other specially made instruments. Do not use a knitting needle, that pointed end can tear your skin. Also, I know the festive season is approaching. But, candy canes are a bad idea. They become sticky with moisture and stick to the skin plus your inserting all that nasty sugar that will produce a lovely yeast infection.
A few basic questions I'm asked.
What size do I begin will. My recommendation is a Hagar 5.
Does it hurt. It shouldn't. Don't push it just let it slide on it's own. Sometimes guys say it stings if your using metal. In that case warm up the sound under the warm water to body temperature.
Also use sterile lube. Make sure it's water based and individually wrapped. Once you open something it's no longer sterile. The main thing though is to have fun and see how big you can go. The pictures are of me with the wonderful Miss Sissy K. She just eats up the entire length of my sounds.