Wiktionary
vb. To leave abruptly.
Usage examples of "up and leave".
I don't understand what you're saying, but I'll come in and beat your fucking brains out if you don't shut up and leave her alone.
If 1 could have, I would have paid her all my baby-sitting money to shut up and leave.
Sometimes the rest would get up and leave the room, and even then the two young people, though by themselves, would sit in perfect silence, as before.
Intense diplomatic activities were noticed in Salisbury and many of the foreign embassies were preparing to pack up and leave the country.
Otherwise they will up and leave without even thanking you for the aphids.
She may have thought he'd lost his mind: she looked like she was about to stand up and leave.
Surely, knowing how he felt about her, she wouldn't just pack up and leave without even saying goodbye.
We can't up and leave like we think we're too good to mix with 'em.