If you are referring to the acronym, it stands for "For F***'s Sake"
This:
Well I don't have the problem of a husband or partner haha but my family have no interest in flying at all- besides the cost and how many hours until I get the lisence! I can't remember mum askingbout safety really other than whn I mentioned going solo. My sister just cuts me off when I mention planes and my best friend talks to me but just doesn't understand the fun of it or hoe I'm so interested and obviously I can't take either of them up with me nor afford flying lessons for them so I'm stuck with telling all you guys how cool it is which you allready know!! And I don't like telling people at air cadets boitit either cus it seems like boasting. Sorry about spelling too I'm in a rush and my iPod corrects me- if I was your wife I'd be happy to talk to you about flying haha
Is why we use acronyms.