GET YOUR DUCKS IN A ROW

Get your ducks in a row - get your affairs in order; organize.

e.g.

Before you talk to the police, you should get your ducks in a row. They are going to scrutinize your story and alibi.

or

Planning To Divorce? Better Get Your Ducks In a Row!

http://sfdivorcecoach.com/planning-to-divorce-better-get-your-ducks-in-a-row/

SET THE RECORD STRAIGHT

PUT  RIGHT A MISTAKE

e.g.

A letter from him later put the record straight, saying he 'd had his leg amputated in a hospital in Bulgaria.

http://sentence.yourdictionary.com/straight

SWITCHEROO

SWITCHEROO  is a used to talk about an unexpected change of events, character, attitude etc. 

Seinfeld once tried to pull girlfriend switcheroo because his girlfriend's roomate had a nice laugh and his girlfriend had no sense of humor. He couldn't live with that, being a comedian.

eg.

Note the clever switcheroo in the sentence “nature offers no compelling evidence for an intelligent designer and countless examples of unintelligent design.” Here he cleverly switches from designer to design. ID isn’t about evidence for any particular designer but about evidence of design. Harris thus uses the cliam that nature exhibits “unintelligent design” as evidence (proof?) of no designer. This is a subtle, but clever, re-statement of the old “God wouldn’t not have done it that way” argument we’ve seen so often in the past.

http://www.teleological.org/blog/2006/12/14/sam-harris-on-how-to-build-a-straw-man-and-other-fallacies/

or

Jerry: No, no, the old switcheroo is you poison your drink then you switch it with the other person's.

www.seinfeldscripts.com/TheBurning.html