Cool shit is the (currently) unofficial emoji that was constructed with the poop emoji and the sunglasses from the cool emoji; created as the logo for 📝Shit that Glows.

According to (by my understanding) the copyright 📝Apple has assigned to their emojis, changes to any emoji constitutes as a derivative work; the intellectual property of which is owned by the creator. Thus, I am the inventor of "cool shit". Life goal, have it accepted to the unicode database.

References

1. 📝Courtney Bowditch, Creative Director for 📝Shit that Glows