When a person is indecisive about doing anything. They change their mind constantly about everything, yet each time think they know exactly what they want. An even worse case is when they spend money on an object they want, no longer like it, sell the object, then realize they liked it after all and purchase it again.
Jamie: "I think I'm gonna sell my headphones I just got and buy another pair. This pair is definitely the best kind and what I want."
Jason: "Looks like you're pullin a Josh."
Jamie: "NO! These are definitely what I want now."