You might think that fashion trends are weird now, but our clothing has gone through many cycles of weirdness for various reasons -beauty, comfort, utility, yeah sure, but mostly fashion is for distinguishing class and rank among people. It's good to be rich, powerful, and/or trendy, and it's even better to show off those things to everyone who sees you through your attire. John Green tells us how those various trends manifested themselves in history in the latest episode of the Mental Floss List Show.