'Fàng ge pì' literally combines 'fàng' (to release or let out), 'ge' (a generic measure word), and 'pì' (fart). It's a colloquial, informal verb phrase meaning 'to let out a fart'. Unlike formal terms like '排气' (qìpái) used in medical contexts, this expression is casual, often humorous or blunt, and common in everyday spoken Chinese among friends or family. It reflects bodily functions openly but carries mild vulgarity — acceptable among intimates, inappropriate in formal or polite settings.

The phrase follows standard verb–object structure: the verb 'fàng' takes 'ge pì' as its object. Though 'pì' alone can function as a noun, adding 'ge' makes it more conversational and natural in speech. Tone and context heavily influence whether it sounds playful, dismissive, or crude — for instance, saying it while laughing diffuses tension, whereas saying it sternly during an argument may be insulting.