No butthole, no care.

Originating on the site "Is Anyone Up" (Hunter Moore)

Basically, I see your butthole in your n00dz

Put simply NBHNC means "No butt hole No care"
meaning if a girl isn't showing you her butt hole in a picture or video or even in real life, you're not interested in her.

A hash tag made popular by Hunter Moore of the website isanyoneup.com

A viral hash-tag popular on Twitter and Tumblr standing for "No Butt Hole No Care." This originated with the popular website IsAnyoneUp?, which distributes submitted nudes to the world. People will use this as a hash-tag, some even have had it tattooed on their bodies.

Means "no butthole no care" it was made popular from the website isanyoneup.

It's also very common to see it used in a hash tag "#NBHNC"

No Butt Hole No Care

if you're desperately trying to figure out what this means, you are an asshole.

No Butt Hole, No Care.

Term used on the site, isanyoneup.com