One explanation is that the golden poop is a symbol of good luck in Japan, which is why it was included.

https://en.wikipedia.org/wiki/Kin_no_unko

@houstonEuler golden showers must be good luck somewhere

@strutheo Not a golden shower, but: https://en.wikipedia.org/wiki/Virgin_boy_egg

@houstonEuler a marinade too, truly deserving of an emoji

related

@houstonEuler I'd try anything once

It's because Big Cloaca designed the emojis, combining both functions into one.

@NathanScott im glad someone is willing to say it

there is a poop emoji - when will we be able to pee?

💧 I propose that this emoji is a pee emoji for the extremely hydrated person

@Mad they should do a zwj combination of water drop for urine !