Cloudy with a Chance of Meatballs - On the title card, there was a living roasted chicken being hit by Timmy; This is likely a reference to the scene where Flint, Sam and Brent fight roasted chickens.
Alien - When the casserole grabs on to Timmy's face, Mr. Turner says "I'll get that off before it lays eggs in your brain" which makes a clearly reference to whereas when the titular alien laid eggs on a person's chest.
You can easily see the Mexican flag doesn't have a seal on it and it looks more like the flag of Italy.
When Poof is a timer, his lashes are missing,
Someone frolicking across the sausage field, and saying "I feel so greasy!".
Mrs. Turner being doused with water by the firemen.
The meatloaf going after Mr. Turner/Timmy.
Cosmo panicking and eating some parts from a house.