Retrois 

The elegant and classy way to identify someone as a retard.

Guy: Dude, you're retarded!
Girl: Don't say that word!
Guy: Sorry, what I meant to say is, dude, you're a retrois!

Retrois by TheRealChickenFucker June 5, 2018

Retrostalgia 

Nostalgia for something one wasn't alive for.

"Maybe it's just retrostalgia, but I really wish disco would make a comeback."

Retrostalgia by Nick Baum May 27, 2007

retrospective sickie 

When a sick day is taken after being sick, so one can actually enjoy having the day off work.

- Jane: Bob, you look terrible! You should have stayed at home today.
- Bob: Don't worry Jane, I'll be taking a retrospective sickie tomorrow.

retrospective sickie by AustralianWorkEthic April 20, 2010

retrospect 

Looking back and seeing how dumb you were

In retrospect, I shouldn't have jumped off the skyscraper

retrospect by EthanTheMightyCheese May 9, 2003

retrospectacles 

Noun. what you wear when you analyze events,or dissect previous errors, with the benefit of hindsight.

Wearing my retrospectacles, planning a vacation in Baghdad was not my best idea.

retrospectacles by BigJimBob July 20, 2008

retrospectoscope

Medical imaging device for looking at the past and finding out what could have been done better.

Nurse - If we had not given Mrs Jones that dose of morphine I don't think she would have stoped breathing.

Dr - Stop using your retrospectoscope!

retrospectoscope by Muggs August 28, 2006

Retrospect 

a review of a past corse of events

in retrospect, i actually DID eat ur bacon, and im real sorry

Retrospect by pseudonym = bacon bits June 16, 2018