Gaah!
A sound you make when you're so confused and frustrated you don't know if you're happy or just ready to cry.
Gaah! My teacher said I have to write an essay on why pizza is the best food ever.
Gaah! My crush asked me out, but then he asked me out again, and then he asked me out a third time.
Gaah! I got a B on my math test, but I still failed my history class.