When you are going out drinking and you have to drive to the bar or party to get there. You park your car fully aware that you may have to leave it overnight in case you get all blacked out. This is to prevent a ticket or towing the next morning.
Nah, man. It's all good. I don't have to move my car tonight because I engaged in a little preventive parking before I got here. Thanks, though - good lookin out. Now let's black out with our hawks out!