hnnggg 

1. Consider the possibility of being overwhelmed by moe to the extent of having certain or multiple internal organs imploding.

Hnnnnnnnnnnggggg!!! can be considered as a reaction to such incidences of moe overload.

2. Can also be consider as the sound you make when you feel indifferent or annoyed by something

OMG! Azu-Nyan moe' gallery!! I think I... hnnggg!!!!!!!

2.

a. I finally went out with that chick i told you
b. Oh really... hnnggg...

hnnggg by law-ra August 25, 2009

hnnggg 

The feeling one gets when they see their unrequited love/crush on the street. Taken from the sound one makes when experiencing the feeling.

I saw passed her on the street the other day and had a hnnggg

hnnggg by therealjohnsie November 27, 2016

hnngg 

The day that tumblr took over omegle.

Person 1 "hnngg"
Person 2 "hnngg"
Person 1 "tumblr?
Person 2 "yeah ! follow me!"

hnngg by nexttimeforever.tumblr May 17, 2010