Do whatever you want.

To fall or to let fall.

A number of things lying one on top of another.

Stay alert so that you will notice that person or thing.

Properly, safety.

To say things that are not meant to be taken seriously.

To end.

To put in an upright position.

The place inside an airport where passengers and their baggage are checked to make sure that no one carries anything dangerous onto an aircraft.

Cold enough to make you fell uncomfortable.

Warned about something bad or dangerous, but that thing does not actually happen

Not to worry about something in advance.

Certainly.