Meaning
What does FLBP mean?
The phrase “FLBP” is used as an acronym for “Future Lower Back Problems” which is generally used on social media sites like Twitter, Facebook, Instagram, and other websites where there are photos or photoblogs of women, who have a very large breast size, to the point, where it can cause them lower back problems in the future, due to the weight on their chests.
Basically, the term can also be used to sexualise a woman, who has large breasts, but the main meaning is used as a medical term.
Origin
What's the origin of FLBP?
The exact origin of “FLBP” is unknown, but some say, it first appeared thanks to the website “the Chive” in early 2011, however it is highly possible that the term and acronym has been used way before this.
Spread & Usage
How did FLBP spread?
The phrase “FLBP” can usually found on websites, where you can find large breasted women and is used by the site admins, as a tag or a title for the content, but you can also find it on social media sites like Facebook, Instagram and Twitter where it even has its own hashtag.
“FLBP” is often abused to gain attention by “Instagram models” or “Instagram influencers”, who show off their bodies to other people.

External resources
- Urban Dictionary – FLBP