let the chips fall where they may

buy to let

To purchase a property as in investment, and to let it out for rental instead of living in it

cash in one's chips

To discontinue an activity, accepting whatever gains or losses one has incurred; to give up.

don't let the door hit you on the way out

Used as a command to leave in haste, or to indicate that one is glad, or at least unmoved, to see the addressed person leaving.

fall apart

To be emotionally in crisis.

fall around

To fall over continually, especially through drunkenness, clumsiness, or incompetence.

fall asleep

To be affected by paresthesia; to go numb.

fall at the last hurdle

To fail near the end of an activity, a project, etc.

fall behind

To be late (for a regular event)