How do you "stretch the rules" so to speak in your everyday life?

For instance, I felt lazy today, so I wore my pajamas to work. Granted, we can wear pretty much whatever we feel like, but jammies make me feel like I’m being naughty and pushing the envelope a bit and I like it (when I say pajamas, I mean plaid Joe Boxer pants… not moons and stars and funny cartoon characters, but still).

What things do you do that you know technically fall within acceptable guidelines, but “sort of not really”, work or otherwise?