It's bad to lie to someone.
Devon is asked by his teacher if he read the homework assignment last night.
Devon wants to respond to his teacher.
Devon tells his teacher he was unable to finish all the reading.
Devon says that he did the reading last night, neglecting to mention that he fell asleep half-way through.
Devon is given some extra time at the beginning of class to catch up on the reading assignment.
Devon fails a pop quiz the teacher gives him about the reading.