Kids sometimes have major meltdowns when they have to wait for what they want, and even some grown adults never outgrow that phase of their life. No one likes to wait in line , whether you're queuing up to buy a meal, purchase a ticket, or buy some new clothes. But lines are pretty necessary at most stores, of course. There'd be a lot of fighting going down if there was no set of rules in place. While the reason for lining up seems obvious and fairly simple to most of us, this entitled woman di…