Your post made me giggle because it reminded me of my DS when I read it. My son is very literal, almost to the point that it makes no sense (which is kind of paradoxal).
When he was about 4 years old we went to bouncy house/open gym night at school. We told him that he had to stand in line to wait until it was his turn. He just kept standing in one spot awkwardly. My husband and I kept telling him to move ahead but he wouldn't. Finally we realized that he was standing on a line (for the basketball court) on the floor and he thought he had to stay there because we told him to "stand in line" :-D
