gr00bering 

A form of sophisticated internet trolling where the troll appears to be a newbie and then lures the resident experts into wasting lots of time on mindless questions.

Proper gr00bering is done with style and humor, such as asking how to write an operating system in JavaScript (though not directly, but after a lengthy introduction to establish genuine newbieness)

A gr00ber is persistent and it is common for this type of troll to register several nick names and use various forms of proxies to evade bans.

"Stop gr00bering you fecking moron."

"Haha, you just got gr00bered"

"Are you a gr00ber?"

gr00bering by Antitroller May 8, 2008

grubering 

When you accidentally tell the truth about something.

John Gruber is grubering everybody by accidentally saying that Obamacare was intentionally written so that stupid voters couldn't understand it.

grubering by FBHO November 14, 2014

grubering 

The act of being grubered.

John gave his neighbor a good grubering when he sold him a broken lawn mower.

grubering by Coach MC Loud November 14, 2014