I thought I'd heard every travel hack , until I read this one, that is. I can truly say I've never thought about treating my luggage the way this woman plans to. Airports are quite strict with their luggage requirements. If you don't look it up before you go, you'll be stuck with a suitcase that's too big or too heavy, meaning you'll have to cough up some cash to fly your precious belongings along with you. And heaven forbid you have liquids that are more than 3.4 ounces, or have a carry on tha…