To save money I decided to fly with only a small under-seat bag for a week. So I wore three jumpers and two pairs of trousers onto the plane. In July. I looked like a duvet with a passport. I sweated through the entire security queue,. I saved roughly the price of a sandwich. I spent it on an airport sandwich that cost double.
You beat the airline by one sandwich. The airline made it back on your seat before you sat down.