User blog comment:AustinDR/Thoughts on City Slickers and Fool Me Twice/@comment-34904882-20180210001715/@comment-32053026-20180210003202

What about a surprise twist when at the end, the family Luan sees is actually another stunt double family that were hires by the original Loud Family (who were hiding in the bunker) who were 100% identical to each other but with different voices, which the other stunt doubles use a special gum to change their voice to make them sound like the real family. And all the friends and people they know were also the same stunt doubles with the originals  being with them. Now that's a fool me twice right there, or seeing doubles.