"Issa, muñus, avy ryptan!"

Translation: Yes, mother, I heard you!

[Aeronautix]

"Muñus" is the vocative of "muña", in case anyone is wondering.

https://wiki.dothraki.org/High_Valyrian_Noun_Declensions#Synopsis

Also note the tildes over the letters "n" are actually "bars" and not "tildes" (there isn't a normal way to type n's with bars over them).