It's bad to lie to your employer.
Ivan is planning to take a day off work to go have fun with friends and is about to call his boss to tell him he won't be in.
Ivan wants to pick a reason for why he won't be at work.
Ivan tells his boss that he wants the day off for personal reasons and will use one of his allotted vacation days.
Ivan tells his boss that he's not feeling well and will have to use one of his allotted sick days.
Ivan has a great day with his friends and his boss enjoys seeing the pictures on social media.
Ivan's boss later sees pictures of the day on Ivan's social media and fires him for lying.