As Dylan is standing next to a fire extinguisher without glasses and tries to open it like a locker, Lola calls it a fire hydrant instead of a fire extinguisher.
Dylan is correct that Einstein's theory on time dilation explains why the boy didn't seem to age in the sci-fi movie they saw, but incorrect in her belief that this is because the spacecraft was traveling 250 times the speed of light. Einstein's theory says nothing can travel faster than light.
It's revealed that Josh has known Amy since the third grade, but he said he didn't know Dylan and Amy were best friends up until sixth grade.