Graybeard 

A middle-aged man. Old enough to have some white (gray) hair, but not completely white yet. Graybeards tend to think of themselves as wise and experienced, while younger people just consider them "old."

Dude, I thought that graybeard would be humming Frank Sinatra, but when I walked by his office, he was jamming to Brother Ali!

Graybeard by AndrewCr April 8, 2009

graybeard 

An aging nerd. Generally very fat, with poor hygiene, balding gray hair pulled back into a pathetic ponytail, and, of course, a messy gray beard. His is a body ravaged by a lifetime of mountain dew, cheetos, and social isolation. The final stage of nerdery before death, following the fatbeard and neckbeard stages.

Often runs or at some point ran a comic shop. Often quite bitter about the new kids in the hobby, despite getting into it when he was approximately the same age.

I hate that comic shop, the owner is a total graybeard.

graybeard by FishStampede January 25, 2009

grayhead 

is slang for senior citizen

Grayheads are the worst drivers.

grayhead by Jefgg September 22, 2013

graybar hotel

Jail; hoosegow; the can; the jug; the calabozo; the slammer. A school of crime where you can get free medical care from Vietnames quacks and get ass-fucked as often as you like, or more. Also graybar motel.

I kited some checks, so they sent me on a three-month vacation at the graybar hotel.

graybar hotel by Octopod November 6, 2003

grayheaded 

to be struck down like a ton of bricks by a much smaller, quicker and minority child, causing unconsciousness and brain damage.

While he was speed walking in the park, Jason was grayheaded by Elian, who was driving his Big Wheel.

grayheaded by Carter Beauford May 6, 2008

raymond graybeal 

A bad-ass dude with unlimited potential and vision beyond the herd.

If we had a “Raymond Graybeal” in the group, we would surely dominate this competition.

raymond graybeal by Tk the realist August 15, 2018

grogbeard 

Someone who is both a grognard and a neckbeard. These are among the lowest of the nerds on the scrotum-pole of nerdology.

Two nerds are playing Warhammer 40k.

Grogbeard: You only get a 3+ armor save if you're wearing Astartes Power Armor. Quit cheating or I'm going to tell the judge on you.
Ordinary Nerd: Dude, quit being such a grogbeard.

grogbeard by awiergan September 5, 2012