Facebook twitch 

1. When a person is on Facebook so much that their eyes twitch to the bottom right-hand corner, checking to see if they have any notifications purely out of habit, even when they are on a website that is not Facebook.

2. Less common: When a person uses Facebook so much that they respond to non-Facebook-related situations (sometimes in the real world) in ways that would only be used on Facebook.

1. I was on Urban Dictionary the other day, where there are no notifications, but my Facebook twitch made me check the corner every two seconds.

2. Her Facebook twitch was so bad that when she saw me eating a muffin, she proceeded to shout out that she'd like to 'become a fan.'

Facebook twitch by Nicobeans April 27, 2009

Facebook Shark 

a Facebook user who logs on and lies in wait for someone else to log on, so that they can immediately trap them in a conversation.

Hm, I think I'll log into Facebook.
2 seconds later:
new message from Jason: HEY!!!!!
Damn, what a Facebook Shark.

Facebook Shark by PoisonPen May 23, 2009

Facebook Shaggin' 

When you leave the room forgetting to close your Facebook and your friend updates your status to say something gay/embarrassing/uncool.

Seth Hummer: just gave my first blow job. It was the best thing i have ever done with my mouth.

Justin Chelf: wtf hummer, you faggot.

Seth Hummer: somebody's been Facebook shaggin' me.

Facebook Shaggin' by Seymourbutts5 November 12, 2009

Facebook relationship

A couple that seems to only date through facebook and not in the real world.

Brittany and Adam seem like their not even going out!

yea they have a total facebook relationship

Facebook relationship by Idiptoastinchili November 11, 2010

Facebook Fascism 

1)When Facebook makes you do something.

E.g When Facebook at first gives you a choice to upgrade your profile, but then says it will upgrade your profile in a few days. When the old version works fine and you like it, and wish to keep it.

Dave: I don't want to upgrade my profile, I like the old one.
Fred: I know, but they are automatically upgrading everyone in a couple of days if you haven't already done it yourself.
Dave: Bullsh*t, that's Facebook Fascism

Facebook Fascism by JimmyNZ January 12, 2011

Facebook fucking 

v. The act of sexting or phone sex over Facebook chat

1: Hey Betty! Guess who I was Facebook fucking yesterday?
2: idk! Was it Evan?

1: omg! Yeah!
2: oh boo, you whore.

Facebook fucking by Sassafras.Honeybadger January 6, 2012

Facebook Bitch 

A Female or Male;prepherably a female. A person you meet on facebook, chat and inbox for a long period of time and then finally meet up, you hook up with "facebook bitch" just once. After the hook up you block her/him and ignore them afterwords.

Jim: so how was your night?
Bill: I had a fantastic night with a Facebook Bitch :)

Jim: NICE
Bill: yes, blocked that broad right after I got it in!

Facebook Bitch by Clairicettttt September 19, 2011