RFB 

R Fuckin' B

Used to describe a Nissan vehicle powered by one of Nissan's RB series motors, that has been modified in a particularly bogan way.

Can also be exclaimed in response to witnessing a particularly bogan event performed in a RB powered car.

Loosely applied in rare cases to cars powered by Nissan's VG or SR engines.

Prevalent in Australia and New Zealand.

"Yeah I couln't be fucked sorting a DET swap so I just RFB'd a dirty +T"
"Do a fat skid yallah habib RFB!"

RFB by Mezzanlne April 25, 2017

RFB 

Really Fucking Bored -

1. when you're sitting on your ass during the weekend chatting online because there are no parties to go to.
2. when you just broke up with your girlfriend and you have no one to hang out with because you gave your friends up for her because she 'was worth it.'
3. when you are so depressed all you do is surf myspace for friends and wait, refreshing the page over and over to get that message you wont get.

omg i am RFB.
your RFB? dude, i haven't showered or moved from this spot for two days.
Wow, you must be RFB.

RFB by Zach Lien November 18, 2005

RFB 

MEANING: Remember Fallen Brothers. Used primarily in the fire service, police, and military to remember those that have passed away.

FTM-RFB-DTRT-KTF

RFB by SparkyNC May 15, 2018

RFB 

Random Fuck Bag

I like playing games with you guys because you're my friends, but I'm not going to hang out with a bunch of RFBs.

RFB by streep101 January 7, 2009

RFB 

Roll Fuckin Balls or Rollin Fuckin Balls.
A term used by ravers and e-tards alike to describe their experience of rolling (ingesting Ecstasy).

"Dude I took 3 mollys last night. I was RFB!"

"How was the rave?"
"Amazing, I was RFB."

RFB by xraverx November 15, 2009

RFB 

Rat fucking Bastard

That RFB stole my car.

RFB by Rabbit327 January 28, 2010

RFB 

Ready For Babies. Opposite of DTF.
When a girl reaches a certain age her lady parts take over and she becomes obsessed with reproducing.
Should be used to signal their intent on Tinder.

Careful bro that chick is rfb....

RFB by Falzeee October 27, 2014