Work hard to get out of work
The OP doesn’t mean give 110% at the office and hope that your bosses will go light on you when you ditch. Instead, this person suggests that you book a meeting room in your office then play jazz music in the background. If anyone calls and asks where you are, you can say that you were put on hold during a business call. The music should be convincing enough.
But what do you do when your boss suddenly barges into the room and sees you sleeping under the meeting table? You can pack your stuff and your sad office plant into a cardboard box and leave the premises before they call security.