Fb

Fb is short for many things I'm sure, but what it is most commonly known and used for is FaceBook.

Facebook is a homepage where one can share photos, status updates about their life etc.

Fb is not something one says while speaking, it is an internet chat or sms abbreviation.

"Omg, he totally wrote to me on Fb!"

"I uploaded all the photos from last night on Fb!"

by Mrs.Potatohead October 6, 2012

fb fb

Facebook fuck buddy. Finding a friend on facebook to hook up with no strings attached

hey girl, wanna be my fb fb?

by covert21 February 21, 2011

FB

Fuck Buddy. A person who are having casual sex with on a regular basis, but are not involved in a romantic relationship with.

We aren't a couple, she's just my fb.

by Asher April 13, 2005

fb

Fb is an acronym used on social media sites such as instagram meaning " Follow Back".

*follows Kim on ig and comments on a pic*
"Fb?"

by Xmariah6 February 4, 2015

#fb

Twitter hashtag for posting your tweets to facebook. An app on facebook, selective tweets, will post every tweet with the hashtag "#fb" to your facebook wall as well as twitter. Any tweet you post without "#fb" will not be posted to your facebook wall, only to twitter.

I want this tweet posted to twitter and facebook. #fb

I want this tweet posted only on twitter.

by twittered January 4, 2012

FB

Short for Fuck Boy.

Jake is such an FB.

by Dustyturtle January 9, 2015

FB

1: Facebook
2: Fucking Bitch
3: Fuck Buddy
4: Finger Bang

1: Hey did you see Alex's profile on fb??
2: Who does that fb think she is?
3: That chick over there is my fb.
4: My husband fb me before we went to sleep.

by MehRoxz July 15, 2011