system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does semen “ball up” and get hard when introduced to water?
gpt
Semen contains a lot of protein. Proteins are rally long molecules made of amino acids (mostly Carbon, Hydrogen, some Nitrogen and Oxygen). In their "normal" state they are nice long strings, but under the right (wrong) conditions they tangle up like the headphones in your pockets and become a weird ball.

Same happens when you cook an egg.

Cold water is your friend when cleaning up.