"Gene stuff" is doing some pretty heavy lifting there.

blood enters the kidneys -> membrane stuff -> urine passes to the bladder

Humans are just water with stuff in it

Peepee is water in -> water out.

nah the reproductive system is just as complicated

They've played us for absolute fools.

Nope making a human is harder

Hmm, I think the other way is more accurate. Embryo development is incredibly complex to the point where an entire field of biology is dedicated to studying it (developmental biology)

pee is stored in the... blood?

This is wildly inaccurate. Summarizing developmental and reproductive biology undercover "gene stuff" does the heavy lifting here.

While everything is relative, I do think that introductory anatomy/physiology courses go way more in depth with the urinary system than they do with reproductive.

With the reproductive system, there are the various phases / cycles to memorize + the associated hormones.

With the urinary system, there are the hormones, how it affects blood pressure/volume, each section of the nephron, how the hormones affect the transfer of each molecule at each section of the nephron... and that's just the stuff I remember off the top of my head

Found the nephrologist.

1. Pee enters the balls
2. It is stored there for a time
3. The pee is peed out

Making a person fails the majority of the time, while the vast majority of people can pee pee without a lot of effort.

Wait until you learn about how pregnancy actually works (and how much - or little - science knows about it). And you will basically turn your meme around. Ahh, the miracles of the egg and the placenta, and all the miracles of how that egg is kept alive, etc. The urinary tract stuff will read like "The Gruffalo" in comparison.

Never been able to figure out what the hell the last guy is supposed to be in the bottom right of the image. A super hero of some sort?