The full form of FUPA is fatty upper pubic area.
“FUPA” in an internet acronym used to represent the phrase “fatty upper pubic area.” The phrase describes the area between the abdomen and the slit of the pubic area where the pubic hair grows. This area is known in the field of medicine as the mons pubis.

Origin of FUPA
The acronym “FUPA” has been used widely since at least 2010 to describe this area of the body. The condition typically occurs because a person is overweight or because of pregnancy. Although some think of it as something to be ashamed of, it is a very common condition that many people have. In the 2018 September issue of Vogue, Beyonce’ declared that she was proud of her “FUPA” after giving birth to her child.

Example Conversations
Friend 1: I can’t wait to have this baby and get back to my original body image.
Friend 2: Aww! You mean you aren’t going to be proud to rock your FUPA like Beyonce’?
Friend 1: I just meant my abdominal area. I know the FUPA will never go away and I am okay with that.