NN means "no-name" in hvh speak. For example when you kill someone better than you, you would say: "LOL get 1d retarded nn ur mad."

NN is usually used by a bunch of nns calling each other nns.

It is also used by 5 queue ragers in non prime. For example in a 1v5 mm hvh when they kill you:

Rager 1: 1 nn
Rager 2: bad refund
Rager 3: lol cant be a real p2c
Rager 4: 11111111
Rager 5: uid? uid? uid?

You: Are you guys retarded or do you not realize you are this thing called losing.

a spanish word meaning the flipflop
used by latin moms to beat their child's ass

nn literially means night night, but maybe used as "cya"

Simply means no namer. A no namer is a person that no one other knows. Mainly used online and in communities, many people toss the word around for not being well-known and having no friends.

Used in online chatting.
Representational of a happy face, similar to but not as popular as ^_^
Opposite of u.u

Smilie for blushing

usually calling someone Noname. Or in the HVH CS someone New or Unknown on the server.