In text, "dead" is a slang term that is used to convey a strong emotional reaction, typically in response to something funny, shocking, surprising, or absurd. When someone says "Im dead," they are not literally referring to their physical state but rather emphasizing their emotional response. It can be used to indicate that something was so funny or unexpected that it figuratively "killed" them with laughter or surprise. For example, if someone sees a hilarious meme or joke and comments, "Im dead," they mean that it was incredibly funny and they are laughing uncontrollably. "Dead" has become a common phrase in online conversations, particularly on social media platforms, where it is often used to react to humorous or surprising content.