From 1d4chan
Pacman boardgame 75x75.jpg This is a /v/ related article, which we tolerate because it's relevant and/or popular on /tg/... or we just can't be bothered to delete it.

Noobs (alternatively spelt as n00bs, nubs, newbies or newbs) are typically players who are brand-spanking, brain-rapingly new to a game. The most commonly seen noob is the new player starting a game that has already been released for a year. Noobs tend to be adorable for the first five minutes, inciting remarks such as "Aww, the little guy doesn't know how to throw grenades" and "SHUT THE FUCK UP NOOB. ... lol jk"

After the first five minutes, the Noob's constant questions and complaints about the game start causing veteran players to start bitching about the complainer. Then it cascades down to other people bitching about the bitching about the complainer. So on and so forth. However, this style of Noob activity is typically only seen in games of the First Person Shooter type. In MMORPG's, RPG's, TTRPG's, and TTWG's, Noobs are guided and coached along so they actually learn the damn game in an efficient amount of time lie about having experience with a given raid/dungeon, and learn by copying the other players (trust me, I've been there too many times). Yet another reason why traditional games are awesome.