When I was a teen, I was put on a medication that caused retrograde ejaculation. Nothing came out when I orgasmed. Not a drop. After a few weeks of taking the medication, I decided to cheek the medicine in order to get my fix (yeah, I'm calling it that). You remember that episode of South Park where they lost the internet and the dad wasn't able to jack it for several weeks until finally, it looked like he slimed the whole room? Kinda like that.