at it

phrase

British

1.

having sex. A coy euphemism typically used by schoolchildren or the middle-aged.

2.

committing a crime or crimes, or engaged in a confidence trick. A mild euphemism typically used by police offic-ers or criminals themselves, from the common colloquialism 'at it again', refer-ring to any repeated and troublesome activity.

► 'Joey Ganguli is at it all the time. He...earns his rolls of cash in the middle of the Asian gang wars...in the East End of London.' (Guardian, 15 April 2004)