What is your fall back option?

Let's say you lose your job tomorrow or your burger king checkout has now been outsourced to a kiosk; what's your go-to fall back?

Can't work in the same career field you currently do, and you can't sell drugs, pimp, etc... Nothing illegal and has to be a real occupation. Can't do gay porn either (Sorry to some of you)

You basically have to pick up and start over. Do you have a back up plan or an ace-in-the-hole?

ETA: The reason I ask is I used to work in solar and have a lot of friends that still do. I saw the writing on the wall and got out a year ago. Many of them did not, and have committed themselves and their families to that field. Now it's struggling due to new laws and many of them are very very worried. I guess it's just always good to have a back up plan. I went back to school full-time but I also do some work from home. If school doesn't work out, i'd probably put in a package for military OCS.