up to one's old tricks
Behaving in one's usual deceitful or mischievous fashion, as in She's up to her old tricks, telling her parents one thing and her teachers another, or He's up to his old tricks, teasing his sisters until they're in tears. Put as at his old tricks, this idiom was first recorded in 1823.
Words nearby up to one's old tricks
up to,
up to a point,
up to date,
up to no good,
up to one's ears,
up to one's old tricks,
up to par,
up yours,
up-,
up-anchor,
up-and-comer