Hi, frenulum bully here, I think the entire male reproductive system is amazing from start to finish.
Most men don't appreciate how complex it is and how many parts of your body all have to spasm uncontrollably for you to have an orgasm.
This 1980s TV documentary on the miracle of childbirth completely omits any mention of the PC muscles but it's still a way more indepth look at male reproduction than anything that has come since, there's even actual recorded videos of the actual glands spasming and leaking fluids in real time! (Men's reproductive organs starts at 14 minutes in)
https://www.youtube.com/watch?v=juhsB3RY1Oc&t=848