SAD! is a song by American rapper XXXTentacion, released in 2018 as a single from his second album. It became one of his biggest hits, reaching number one on the Billboard Hot 100 after his death that June, and it has remained one of the most streamed tracks of that era. Short clips of its opening quickly spread across TikTok, Instagram and YouTube edits, where the melancholic sound became shorthand for sadness and loss. Its continued use reflects both the song's enduring popularity and its association with emotional storytelling online.