What the fuck does it even mean?

Apparently it means horny net geek? Thought it meant something else entirely...like a warcry of HnF..

Some girl on bumble just sent it to me, so confused now..

isn't it literally the sound you make "hng"?

hnnng is the sound your penor makes when it stands at attenion.

it means im HuNG

or could mean Health N Gains

or urban dictionary it and see:
"The phrase "hnnng" is a form of onomatopoeia used in context when a person sees a very sexually attractive person of the other gender, or same. I personally like to think of it as the sound a young woman makes just as she feels her ovaries are going to burst from being over exposed to excessive sexual hotness. It helps to sound it out. "hnnng-ahhh" I like to add the gasp at the end for I know that's what those fine young mistresses do when they see I have walked into the club. "

tell her to stfu, don't take dat chit

"hnnnng" is the sound you make busting a nut.

Girl is clearly a trap.

Just have her suck your dink and pee in her mouth.

Some guy in my year did this when we were like 14, horrible for both parties

Yeah I know a guy who said he did it. Clearly an idiot lol

what she chomp it cuz she thought it was a gusher and wanted more