"Facebook know" means to know someone only through Facebook. You've never met, talked or texted, but you know many details about each other through posts that appear in the other person's feed and replies to those posts.
by circlesofindecision January 28, 2017
Get the facebook knowmug. "Alicia is our Facebook baby. He first poked me in January, and I moved in with him that same month, and she was born in October"
by Tochterlieber March 24, 2017
Get the facebook babymug. 
The act of posting pictures, statuses and comments to facebook in order to attain further likes and comments, thus boosting one's ego and online social media exposure.
Person 1: Check out how many likes my profile picture's got
Person 2: 34, wow, good effort.
Person 1: Yea man, winning at facebook baseball!
Person 1: Just the 20 likes for my last status
Person 2: Nice man, good facebook baseball
Person 2: 34, wow, good effort.
Person 1: Yea man, winning at facebook baseball!
Person 1: Just the 20 likes for my last status
Person 2: Nice man, good facebook baseball
by TablesAndChairs October 29, 2012
Get the facebook baseballmug. Someone who purposely posts statuses that they know will get liked constantly. This person will always get 30 likes plus on anything they say, because of how famous they are on Facebook. Along with posting statuses to purposely get liked, this person will always complain on their posts, post song lyrics, and play "Truth Is".
Wow, that kid got 99 likes from bitching about another person, what a Facebook hero.
That kid purposely posts statues to get liked, what a Facebook Hero.
Bob said, "Hi" as his status and got 47 likes, what a Facebook Hero.
That kid purposely posts statues to get liked, what a Facebook Hero.
Bob said, "Hi" as his status and got 47 likes, what a Facebook Hero.
by 666hailsatan March 21, 2012
Get the Facebook Heromug. A mom that takes everything seriously and is always determined to find the root of a problem, usually out of curiosity or to get someone in trouble. They will go to the extent to post every little nuisance to Facebook for her mom group to find out the cause.
You saw that Facebook Gasp mom on Nextdoor? Hopefully she'll shut up about that boom sound last night.
by Chroxity3 January 3, 2023
Get the Facebook Gasp mommug. When a person believes he/she has the ability to browse all 500+ facebook friend pages, make no comments or likes and commit all their "friends" perceived sins or faults to memory to later use in a Facebook private messaging fight. Also known as a Facebook stalker or a Face-tard. Usually sign of a delusional or mentally unstable adult computer user.
User: "Why did you delete my comment?"
Facebook Stealth believer: "I cannot stand your endless negativity anymore"
User: "Are you high? I commented on what a crock it was to have to work this weekend."
Facebook Stealth believer: "That's what I mean..."
User: "WTF? My activity log says you haven't liked or commented on my profile since January 12, 2012."
Facebook Stealth believer: "I cannot stand your endless negativity anymore"
User: "Are you high? I commented on what a crock it was to have to work this weekend."
Facebook Stealth believer: "That's what I mean..."
User: "WTF? My activity log says you haven't liked or commented on my profile since January 12, 2012."
by Facebook Haterz Unite January 22, 2014
Get the facebook stealthmug.