Someone who is very smart, talented and has an IQ of 110 or greater, although is not your typical nerd, in a sense that they dont wear jackup trousers, tucked in shirts, have braces and they use informal language often!!!

The word is from the two words NErd and coOl

Also their motto is:

"If at first you don't succeed...
destroy all the evidence you tried"

An abbreviation that stands for “nose exhale out loud.” It’s not quite a laugh. You can use it in lieu of lol

is a cool nerd
NErd coOL

The best line in kpop.
Meaning: “I like you”