Going undercover is a job that requires a person to blend in with their surroundings and act as if they are not present. It involves sleeping, posing, spying, hiding, and snoozing. Sleeping is the act of resting one's body and mind for a period of time. Posing is pretending to be someone or something else. Spying is observing and gathering information without being detected. Hiding is concealing oneself from view. Snoozing is taking a short nap or rest. All of these activities are necessary when going undercover.