You say what you think and you don't particularly care what anyone else thinks about it. 'That's the way it's always been done' just doesn't wash anymore, not with you. If the truth be told, you're feeling quite rebellious, contrary and argumentative.
You might even pick an argument just to spur some controversy. You'll bait others, push their buttons and then say, 'Who, me?' Easily distractible, your mind wanders from the task at hand and it will be a struggle to focus your concentration. Your normal job seems incredibly boring and dull. Trying something devilish to spice things up may be fun in the short run but won't win you any friends in the long run, especially if they get stuck cleaning up the mess you create. This energy is very short-lived, lasting only a few days, so finding a temporary solution to the rebelliousness you feel isn't that hard. For one thing, you can get rid of some of that nervous energy by exercising, as long as you're careful. Play some games, especially online or computer games. Schedule in lots of different activities so you don't get bored.