1) you will get no work from 9am to 3pm. you will even have time to get a nice long lazy lunch. then all the shit comes in at 4pm and you end up going home at 8pm, when work officially ends at 6.
2) you spend way too much money on lunch, and on coffees, sandwiches and other random snacks you don't need. and you are compelled to buy bubble tea you don't want to drink because the office needs 15 for a free delivery and well, you're always the 15th person they ask.
3) you go to the toilet more than you need to because it is the only place you can be yourself, and it is also the only place where work cannot find you. but you measure the time between toilet breaks so it doesn't become too obvious.
4) you daydream about the next public holiday all the time, and about how to "chope" the long holidays before the rest of your department does so you won't be that sad sack in the office when everyone else is in the Bahamas.
5) you hate your office chair. you think about how you can swap it with the unsuspecting twit next to you, all the time. one day, you finally do it. and you find out that his chair is just as shitty as yours. and the search for the perfect chair goes on.