11. '80s/'90s Parties
What Your Son Will Say: So, you used to dress like people in the recent past for fun?
What We Say: And you thought those retro parties were going away for good once '80s parties fell off a couple years ago. We should have known that '90s parties would be waiting in the wings to take their place. It's the Circle of Life.
Also, it became impossible to find new '80s party outfits at Goodwill. We'd already picked everything over for previous theme parties. If you really want to be cutting-edge, might we suggest throwing a 2000s-themed party where you dress as yourself but wear the clothes that you haven't worn in a while?