Grawnch
A mixture of flem and gargles combined with the English language to express extreme frustration over a topic. It does not have a specific part of speech.
Weaboo: It was so kawaii!

You *throw desk at weaboo*, imagining the Dear Sister song playing as it make contact

You *climb thrown desk and punch a whole in the ceiling*

You: GRAWNCH!!!

You *climb through hole and escape the classroom*