Hanson (the kid that rides the imaginary motorcycle) and Zoe are arguing out on the playground around all the other "special" kids. Hanson doesn't have his arms up on the imaginary handle bars. Dewey walks over to lecture them. When the camera focuses on Dewey, Hanson can be seen with his arms up, but when the camera focuses back on Hanson, his arms are down.
When Hal first grabs Reese's nightshirt and pulls pulls him from his bed, Hal uses his left hand. Yet when they walk into the kitchen, Hal has Reese's nightshirt in his right hand.
When Hal and Reese are in the kitchen and Reese drinks from a carton he holds it in his left hand yet he puts it on the table with his right hand.
Reese and Hal are sitting on the sofa and Hal is asking Reese what he should get Lois for their anniversary. Reese is briefly playing a Gameboy, but it has no cartridge in it.