"Fat Tuesday" is the day before the season of Lent, just before Easter.
On Fat Tuesday, participants sometimes "indulge" in a habit or activity, which they plan to give up beginning the following day, when the season of Lent begins.
Lent is a period, where one often "does without" something, such as a food or drink they really shouldn't eat, or perhaps a destructive habit they would be better off not having.
Today is December 31, and here I am in my office, finishing off all the chocolate candy I was given by the sweet church members here . . . so I can start my New Years resolutions for 2009, especially the one about seriously reducing the amount of sweets I eat.
In fact . . I just now . . . (smack, smack) . . . finished off the last piece . . . (smack, smack).
Ever forward . . . ><>