Grandpa breaks the fourth wall because when Kick says "you were falling out of control, through the sky without a parachute?" Grandpa (in the flashback) looks at the viewers and puts his glasses on.
Grandpa's attack "Eye Want You" is a pun on & a reference to the US Army mascot Uncle Sam.
The Dictator's attack "Wall Of Duty' is a reference to the video game series "Call Of Duty".
Grandpa's attack "Duct & Cover" is a pun on the phrase "Duck & Cover", taken from the U.S. Civil defense film of the same name.
Grandpa says that when a motorbike is started in midair, you can do a cool wheelie when you land but the scene shows Grandpa falling normally.
When the motorbike is falling to the ground, it has a parachute. But when it lands, the parachute disappears.
When Kick and the duct slide fall, they are away from Honey. But in the next scene, Honey is near them.
When the metal blinds are open, the letters on the word "Tankinistan" are very closer. In the next scene, the letters are a little bit away from each other and a wood board with a photo appears from nowhere.
When the Colonel says the password, he is mouthing it.
Kick should take one of the planes that are on the base.
When Horace and Pantsy's ancestors are talking after Grandpa splashes mud on them, the colors on Pantsy's glasses swap sides.
Before Horace and Pantsy's ancestors begin to chase Grandpa, Horace has a dictator hat. But during the chase scenes, he has a WWII era Germany helmet.
It would be impossible for French bread to impale a wall.
The Scientist's hair becomes brighter like Gunther's after the shave formula falls on him.
Thinky McTellsalot cannot tattle on Grandpa and The Scientist because she doesn't know about Grandpa's mission.
Before the commercial break, Grandpa is falling and there are no crates falling around him. But after that, Grandpa is falling with crates.