Shaking My Head (SMH) is a slang acronym used to express disappointment, disbelief, or frustration in response to something foolish, annoying, or absurd. Gen Z frequently uses SMH in text messages, memes, and social media comments to react to situations that leave them unimpressed or exasperated. SMH conveys the sentiment of physically shaking one's head in disapproval without needing to type out a detailed explanation. The phrase is often paired with sarcasm or humor, contributing to its widespread use in online discourse.