The ♊ emoji shows the zodiac symbol for Gemini, the Twins. It represents people born under Gemini and is associated in astrology with curiosity, communication, adaptability, and having more than one side to a personality.
People use it in bios, birthday posts, horoscope discussions, and jokes about Geminis changing their minds or talking a lot. References to being "two-faced" are usually teasing astrology stereotypes, though they can sound pointed in an argument.
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