Carnival is the two week celebration leading up to Lent. The most famous Carnival is celebrated in Rio de Janeiro, Brazil. I am sure you have seen the photos of revelers. The last day, the culmination of Carnival is Mardi Gras.
Since Lent is a time of fasting and going without, people live it up big for the two weeks leading up to Lent. Mardi Gras is the last day to enjoy favored foods it tend so it is a day for fattening up for the long wait till Easter. Mardi Gras translates literally from the French as “Tuesday Fat.” The following day, Ash Wednesday, is the first day of Lent.