I've made an important decision. I am declaring, from now on, Fridays to be now known as "Margarita Fridays." You are allowed, in addition to dressing casually, to have Margaritas on Fridays.
Let's keep it reasonable-- none before, say, 8 a.m. Eastern Standard Time. Be sure to share. And if the boss gives you a hard time, tell him or her it's okay-- Johnny Yen said it's all right.