The exact original recording is not documented, but the phrase comes from common German youth slang where geil shifted from its older meaning to simply mean cool or awesome, and easy adds the sense that something was effortless. Short voice notes like this spread through WhatsApp chats and group messages in German speaking communities before being reused as reaction sounds elsewhere. Its tiny length makes it easy to forward, save and drop into videos, which is why it keeps circulating as a quick celebratory reply long after the first share.