scy, On the German-speaking internet, we write "orrrrr" (with a variable amount of "r"s and, to a lesser extent, "o"s) as an expression of annoyance or anger, especially (but not exclusively!) when we only play being annoyed. Examples (translated):
"orrrr that was the most awful pun ever"
"oorrrrrrr, the bus is 20 minutes late already!"
It's supposed to be a grumpy growl, like in the attached audio.
Is there something similar in English or other languages as well?