The KET emote features a close-up image of a black cat with wide, somewhat startled-looking eyes. It's commonly used to express surprise, confusion, or a sense of being caught off-guard. The emote's name "KET" is likely a playful misspelling or variation of "cat."
KET appears to be a community-created emote that gained popularity on third-party emote platforms like 7TV, BTTV (BetterTTV), or FrankerFaceZ (FFZ). The emote features what looks like someone's pet cat photographed in a somewhat awkward or surprised moment, giving it a humorous quality. While the exact origin date isn't confirmed, similar cat-based emotes began appearing on these platforms around 2018-2020 as animal reaction emotes became increasingly popular in Twitch culture.
KET is typically used in Twitch chat in the following contexts: