Sweet but Psycho is a 2018 pop song by American singer Ava Max, built around a catchy chorus about a woman who is charming one moment and unpredictable the next. It became a worldwide hit and a staple of short-form video, where creators used the hook for transformation edits, ironic reveals and character introductions. Male vocal versions later circulated online as covers and re-recordings, giving the same melody a different tone for edits that play on the contrast in the lyrics. That familiarity keeps the clip useful for comedy and reaction content.