* (Kurt Vonnegut reference)
I've been troubled by my lack of understanding of why she might be upset, all morning, and have come to the conclusion that not only can "FA" mean "Fat Arse", but could also mean "F-ing Arse-soul". Remember, "POS", has different meanings, here on FT, and on the outside.

To further complicate things, to some folks, "Fat Arse" is a good thing.