Bad apple (someone who does bad things that effect on others): You can’t expect a bad a- to be anything but a bad a-.
a bad egg (a dishonest or unreliable person): Don’t trust him, he is a bad egg.
a bite to eat (a small meal): I’ll pull off at the next stop to grab a bite to eat. Years of war change our country into a banana republic.
If Lucy hear about this new profitable investment; she definitely wants a bite of the cherry.
I’ll also pull off at the next stop to grab a bite to eat.