neefer (neef, nef, or nefer) is a word that can be used at any time, anyplace, and have any meaning you would like. it can be a noun, verb, adjective, adverb, etc. its basically the neeferest word ever.
"oh my gosh, you're such a neef! i cannot believe you would do that!" or "wow, that's the neeferest thing i've ever heard you say; so inspiring" or "go nef a neef you neefer!"