A specialized transparentliquid used to lubricate the moving parts of a turn signal. Despite what other answers might tell you, it is absolutely not a joke.
"Man, these are the worst flashers I've ever seen. When was the last time you changed your blinker fluid? Oh, you didn't know that was a thing, well the repair's going to cost you pretty big." - My technician
Gender Fluid is a gender identity best described as a dynamic mix of boy and girl. A person who is Gender Fluid may always feel like a mix of the two traditional genders, but may feel more boy some days, and more girl other days.
Being Gender Fluid has nothing to do with which set of genitalia one has, nor their sexual orientation.
No, I'm not a boy, and I'm not a girl either. I am genderfluid.