I'm thinking of sitting in my boss' chair and farting on it
I don't see what you'll gain from doing such actions. Why go through that?
I want to make a fool out of him for working for such a hellhole company
It's understandable that you are upset with your boss and the company, however you should not do disgusting things to your boss. If your boss catches you or finds out, you may find yourself fired at work.
That's what makes it exciting
If you are willing to take that chance and have a feel for the risks. Then go ahead and feel that rush.