pack up your flaps - Letting someone know you're done with them and they should g

Letting someone know you're done with them and they should go.

Your neighbor shouted, 'Pack up your flaps, or I'm gonna water your plants with soda!'

Your friend said, 'Pack up your flaps, or I'm gonna eat your pizza.'

Your brother said, 'Pack up your flaps, or I'm gonna steal your phone.'