What exactly is urethral sex? Are you talking about sticking a cathet...never mind. Forget I asked. I need to go take a shower now.Low Key said:Me and my best friend regularly make jokes about smegma, urethral sex, etc. regardless of who is around. Don't ask me why or how it got started. My past from 7th to 12th grade is a drug induced blur. Come to think of it, that's probably the "why" in how it got started.