facegag 

a feeling of dread or disgust at seeing that two of your Facebook "friends" who have no reason to know one another have become friends with each other on Facebook, likely as the result of online flirting or a sexual encounter.

While looking through my Facebook news feed, I had to facegag when I noticed that my ex was now Facebook friends with the the town slut... who just happens to live in a town 2000 miles away that my ex recently visited.

facegag by AbbintheATL November 2, 2011

Facegamer

Noun:

A person who plays one or more of the game applications on Facebook. Usually these people become very annoying with their constant game posts about what they need for their Farm, Fish, Mafia, Pets, etc. Such players also tend to spam inboxes with game invites and so called "free gifts".

Joe: "Man, Kate is really annoying me with all her posts. I can't see the important posts on my wall anymore because of her. She has really become a Facegamer"

Kevin: "After being laid-off for a few months, I really became a Facegamer and it kind of sucked to go back to work"

Facegamer by Dayzee0u812 August 9, 2010

Facetag 

A Facetag is a Hashtag used on Facebook, but it does not do anything because Facebook is not Twitter.

"Facebook post: If 2 people (male and female) create 2 children. They have effectively replaced themselves (birthrate is "2.1") #BadatMATH"

"Comment on post: Hey baby.. Hashtags on Facebook don't do anything!"

"Response: Hashtags are used on Twitter by twits. That was a Facetag"

Facetag by cheddarbob2u March 27, 2013

Facelag 

The facial sensation one experiences while drunk; sloshy cheeks, tingly lips, and heavy eyelids are all components of facelag.

Guy 1: Bro, I have the gnarliest facelag right now. I swear if you slapped me with a fish it wouldn't even phase me.

Guy 2: I know homie you killed that 40 mad quick. I guess this is why they call it getting shitfaced.

Facelag by FuggaDuck October 16, 2011

Facepage 

Something your grandmother might refer to when implying she is totally down with online social networking.

See also: Tweeter.

Nana: I think I might get me a Facepage so that I can see pics from Estelle's 50th anniversary vacay in Cabo.

Facepage by Teejay9 August 9, 2010

facegamer

A person who plays Facebook games and considers themselves a real gamer.

Tony thinks he knows RPGs because he plays Mafia Wars. What a facegamer!

facegamer by multislacker August 9, 2010

Facegay 

Guys who write on facebook just like girls ie putting kisses after everything or extending letters in words and extensive use of smileys

Dude 1: errm, Im not quite sureee on that xx :P :)

Dude 2 to Dude 3: Man dude 1 is so facegay

Facegay by Yorma August 18, 2009