have sticky fingers
US /hæv ˈstɪk.i ˈfɪŋ.ɡərz/
UK /hæv ˈstɪk.i ˈfɪŋ.ɡərz/

1.
to be prone to stealing
:
•
The cashier was fired because she was caught having sticky fingers.
•
You need to watch him carefully; he tends to have sticky fingers.
to be prone to stealing