It's a saying in which you say out of sheer fustration instead of actually swearing.
What you tell people what it means may vary but commonly used as That's not nice.
However what your really saying is Fuck You And The Horse You Rode On.
In a professional setting or a place with parents and their children. Instead of embarassing yourself by cussing like an idiot. Simply in a calmly matter say Fuathryo. To them, It may be another language.
After being told by my best friend that he cheated with my girlfriend; Realizing my daughter was in the room, I told him fuathryo and left.
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.