A filmmaker's term, usually used to postpone a certain part of the shot, be it the lighting, composition or anything else that could be fixed in post production.
Filmmakers who are short for time will use this phrase.
Camera Operator: Hey Dan, I wiggled a little during that last shot, should we take it again?
Director: Nah don't worry, we'll fix it in post.
A Fix It Ticket is a citation written that can be corrected, you can correct your violation and take proof to court and the judge will dismiss the citation and you may have to pay a small dismissal fee. (Usually $25.00+)
John Doe was pulled over, the officer asked him for his proof of insurance. John Doe couldn't provide proof, the officer wrote a Fix It Ticket, John Doe got insurance and took proof to court, the judge dismissed his ticket, and he payed a small fee for the dismissal.