up to your tricks

up to (one's) (old) tricks

Doing things that one was known for doing in the past, especially deceitful or mischievous behavior. Food went missing from the school cafeteria? It sounds like Billy is up to his tricks again. I reunited with my two best friends after nearly five years apart, and we were up to our old tricks again in no time.
See also: to, trick, up
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

up to your tricks

or

up to your old tricks

COMMON If someone is up to their tricks or up to their old tricks, they are behaving in the same dishonest or foolish way that they have done in the past. Homeowners wondering if estate agents are no longer up to their tricks should think again. They seemed to be up to their old tricks of promising one thing and doing the opposite.
See also: to, trick, up
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

up to your (old) tricks

misbehaving in a characteristic way. informal
See also: to, trick, up
Farlex Partner Idioms Dictionary © Farlex 2017
See also: