trouser chuff

n

British

a fart.

A mock-childish term used by ado-lescents in the 1980s and popularised in the best-selling Viz comic.

► 'Johnny Fartpants' "trouser chuffs" al-ways get him into meddlesome scrapes -losing his pocket money or causing the San Francisco earthquake of 1906...' (Time Out magazine, December 1988)