U+1F421 ยท emoji since 2010
The blowfish, or pufferfish, puffs up into a spiky ball when threatened. It means the sea, sushi, and a small thing that looks fierce.
It headlines aquarium posts and fugu dishes, and tags puffing up or being all bark and spikes.
In texting, ๐ก 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 ๐ก is not really one of them.
Its official Unicode name is the Blowfish emoji. In everyday chat most people just call it the blowfish emoji or describe what it shows. Copy and paste it from the button at the top of this page.
The ๐ก 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.