Meaning
A hand with index and little fingers raised and the middle fingers folded under the thumb, forming a pair of horns.
It is the classic “rock on” sign at concerts, especially rock and metal, and more broadly means awesome or let’s go. Do not confuse it with 🤟, where the thumb is extended. Skin-tone versions exist. Pair with 🎸 or 🔥. Example: “Festival lineup just dropped and it’s insane 🤘”.