A coin that the video game character named Knuckles sells to people. It was made to scam his friend, Shadow. It is also a crypto currency that hides all of your items. By the way, if you're planning to buy a knux coin from Knuckles, make sure you have a conversation about this guy named Pudding.

A euphemism for “kill me” now that composting oneself after one’s death has become popular.