Stands for facebook&jergens. It's kind of like a peanut butter and jelly, but instead of a sandwich, it's a term used for when you're in the mood to plow and want to bang a specific person but you're held back by relationship commitments so you just look at their most provocative profile pics and please yourself in order to release the urge to take them to pound town. This definition is often used by distraught individuals that have had more than five drinks or have just received a text message from a love interest after they have secured their position in a monogamous relationship.
Bob: I just received a text from Amanda
Theodore: oh man, didn't you always have a thing for her?
Bob: yeah, but I'm in a relationship with chloe
Theodore: are you going to cheat on her
Bob: no, I'm just going to FB&J
Theodore: oh man, didn't you always have a thing for her?
Bob: yeah, but I'm in a relationship with chloe
Theodore: are you going to cheat on her
Bob: no, I'm just going to FB&J
by John Redcorn and Rusty Shackle May 4, 2017
 Get the FB&Jmug.
Get the FB&Jmug. Abbreviation for "fucking be serious". Used to denote either that it is now time to become serious or that something is meant to be taken literally.
1: Okay, FBS, we really have to get this shit done. No more messing around.
2: Like, FBS, we're in love.
2: Like, FBS, we're in love.
by shiksadulcinea August 16, 2008
 Get the FBSmug.
Get the FBSmug. by ragermajor December 18, 2012
 Get the fb breakmug.
Get the fb breakmug. she's a fb
by pussyeater333 May 1, 2023
 Get the fbmug.
Get the fbmug. Specifically for football Twitter and the numerous virgins on the platform, ‘fb g’ means follow back g.
Fb g
by fabsfulham on twitter  January 28, 2021
 Get the fb gmug.
Get the fb gmug. when a Facebook user "pokes" more than one person, especially if it is three or more people at one time.
by txphoenix71 September 12, 2013
 Get the FB gangbangmug.
Get the FB gangbangmug. 