Man, we are stretching this one but... Non-pirates say arrgh too, sometimes.
Maybe it's more like a diaphramatic growl, at least in the US and especially New York area.
A stomach-based expression of extreme exasperation, as appropriate for idiot boyfriends who get off on watching boob-scratching.
I mean, there's no spellchecker for growls and grunts, etc. ... especially when approximated by one vowel and a string of consonants.
Let me just say: "Ugh."
-D'Artagnian
I hope Tessa's boobs are less itchy now after all that scratching. If not, we all should scroll back and run that .gif until she feels better.