When I’ve encountered “QUILTBAG” it usually seems a bit tongue-in-cheek, and I suspect that not all of the letters have firmly fixed meanings. A quick Google turns up some sources saying the “U” stands for “Undecided”, “Undetermined”, or “Unidentified”, and some saying it’s “QU” for “QUeer”/“QUestioning”
I was interpreting it as “Queer Undecided Intersex Lesbian Trans Bisexual Asexual Gay”.
I was tempted to make a rather obscure joke about the “U” standing for “Uranian”, a historic term used to describe homosexuals before the word “homosexual” was coined.
I learned from Wikipedia just now that Karl Heinrich Ulrichs, the German writer and activist who introduced the term Uranian/Urning, went on to develop a pretty complex taxonomy of sexual orientation, gender identity, and behavior. Ulrichs’s work was largely forgotten until it was rediscovered by modern LGBT activists, but if it had caught on then instead of LGBT we might have something like UDUdZ. (Maybe pronounced “You Dudes”?)
That is the function of daughters. Especially teenage ones.
Very few people are even aware that term existed; I’m impressed.
I have an overgrown National Novel Writing Month project that’s set in the 19th century, which led me to do some [del]procrastinating[/del] research on views on sexuality during the period. My story is set before Ulrichs’s time though, so I didn’t look into his work and hadn’t encountered his full taxonomy before.