'TGIF' stands for "Thank God It's Friday." It is an expression often used to convey relief or happiness that the workweek is coming to an end and the weekend is approaching. Many people feel a sense of excitement or anticipation for the leisure and relaxation that the weekend brings.
The acronym 'TGIF' originated in the United States and became popular in the 1980s, often associated with the culture of leisure and looking forward to the weekend. The phrase reflects a common sentiment shared by many workers who are relieved to complete their workweek.