In the beginning of the movie, Chester V tells the TV audience that his first invention was the "humble food bar". Later in the movie, in Flint's broken-down lab, he explains to Flint that he invented his "anti-wedgie underwear" when he was only 3. In the TV show, Chester was obviously a young teenager.
When Tim casts Flint & Barry in the giant homemade lure they start off rotating but in the close-up & the approach, they are flying straight. The lure is once again rotating when it enters the hole in the factory.
Right before the bananostrich stampede, Brent pulls on a pair of jeans (that barely fit him) and says, "My feet are turning purple! Is that bad?" You can see they are actually purple. But a second later. when the bushes behind him start to rumble, you can clearly see his foot, and it is no longer purple.
While the reason to switch off the FLDSMDFR is to avoid animals to keep growing and learn to swim to cross tho ocean to the Statue of Liberty, there are several 'foodimals' that actually appear swimming during the film, like the marshmallows, the eggplanatee and the subwhale among others.