The old man sneered disapprovingly. He spit the words, “This is ridiculous,” at me, kneeling on the floor, then claimed his boarding pass and stalked off. I’m a good packer. I’ve taken a nine-week road trip with just a large duffel bag. Gone away for long weekends armed with only what fit into my purse. So you can imagine my mortification as I desperately attempted to lose 12 pounds in the middle of the San Diego airport.