U+1F575 ยท emoji since 2014
The detective in a hat and coat is on the case, sleuthing for clues. It means mystery, investigation, and figuring things out.
Online it tags doing some digging, the friend who investigates a crush's profile or solves the group chat mystery.
In texting, ๐ต๏ธ does not carry a widely used hidden or slang meaning, so you can usually take it at face value. People send it just as it looks, to add a little visual touch or set the mood of a message. Only a handful of emoji have a separate texting code, and ๐ต๏ธ is not really one of them.
Its official Unicode name is the Detective emoji. In everyday chat most people just call it the detective emoji or describe what it shows. Copy and paste it from the button at the top of this page.
The ๐ต๏ธ leads off a short phrase, and the rest of the words are written in cipher, every letter disguised as another emoji. Tap decipher to reveal the whole line.
Or make your own cipher in the translator.