system
Given the following post, respond as if you're commenting on Reddit:
human
[MIB] in MIB II, after Will Smith neuralizes the family in their living room, he tells them to "love and cherish each other for the rest of your life" and the daughter can "stay up late as she wants and have candy and cookies and cake and junk and stuff". What are the long term effects of this?
gpt
There is a line in the middle which may throw things off a bit - after Agent K says "You did not see a room full of shiny weapons, you did not see four alien night crawlers. You will love and cherish each other for the rest of your life."

Agent J adds "Which could be the next 27 or 28 minutes, so y'all should get to lovin' and cherishin'. Oh, and she gets to stay up as late as she wants and have candy and cookies and cake and junk and stuff..." 

I think it could be interpreted that the second part of J's line is related to the first - there only being 27 or 28 minutes left alive and that it's simply for that night the daughter gets to stay up late, but it's possible the parents were to take it as being related to the rest of your life portion. 

If they take it this latter way, then it probably leads to the parents being more lax about bedtimes, but there is no direct command about it being every night, or only eat that, so they are probably just a bit more willing to allow her to have the occasional treat. 

That or she hits 600 pounds before she has to be cut from her home and hospitalised.