A stage in life in which a normal person undergoes the initial changes that will eventually lead to nubhood or their coming into nubhood. Similar to Puberty only it tends to work in reverse, they become weaker, less coordinated and ultimately suck at life, thus they become a nub.
He was such a cool guy, athletic and smart, then all of a sudden he lost 30 pounds and started sucking at Halo... he must be going through Nuberty or something.
A Nogbert is a person that can't do anything well. They are very challeneged at everything, even the slightest challenging things. You could compare them with a mentally disabled person.
That Wendy is a right fuckin Nogbert, she can't even put her money into that vending machine without dropping it on the fuckin floor.
A word branching off of "noobert" which means to be a noob. But this word is more insulting to those who are gamers. or people that just suck in general.