I don't know the exact origin but it's the crying emoji, a degen (often a pedo) is so sexually excited that they are brought to tears and as a degen cannot keep this to themselves and has to announce it with the
, whether in a chat or on an image board. Unfortunately this has bleed into common vtuber chats too. Espdcially when you want ot actually use a crying emoji (which they all have...now) for CRYING or emotion and it looks like you're announcing your intent to JO