What am I? What is this?

[G0IbOylND4u6z]

Im confused. what does Nyanpasu mean? I mean I could google it but screw that. Am I dumb?

[The ATF shot my dogs]

I think it's just her random, meaningless word for "Good morning".

I found an interview with the producer of Non Non Biyori.

　－－主要キャラクターの宮内れんげのせりふ「にゃんぱすー」はどういう意味があるのですか？

　小学1年生が考えた「おはこんばんちわ」的な（笑い）、いろいろなときに対応できるあいさつです。また、れんげというキャラクターは1年生ですが、いろんな意味でませています。知識も多彩で通知表もオール5です。

What's the meaning of "Nyanpasu" from main character Renge Miyauchi?

It's "Ohakonbanchiwa"-like. (laughing) A greeting phrase created by a grade 1 elementary school student. It fits many situations. Renge is grade 1, but she is too grown-up in many ways, and has lots of knowledge and a straight-A report card.
"Ohakonbanchiwa" is a greeting word in from the old anime Dr.Slump, created by Akira Toriyama, the author of Dragonball.) "Ohakonbanchiwa" is created from "Ohayou" (Good morning), "Konniciha"(Hello) and "Konbanwa" (Good evening).

All of this information is taken from anime.stackexchange.com