a lick
A lick is a type of robbery that goes smoothly and leaves you with cash in your pocket. It's like stealing a cake from a bakery and walking out like you own the place.
He pulled off a lick at the bank and walked out with $2000. No one even noticed.
She did a lick at the store. The clerk was too busy on her phone to realize she was gone.
That guy hit a lick at the mall. He walked out with a bag full of stuff and no one stopped him.