FITB 

Fire In The Bowl

Used in online conversation when someone is about to (or in the middle of) smoking a bowl.
also- FITMB and FITFB can mean Fire In The Mother-Fucking Bowl and Fire In The Fucking Bowl respectively.

(during online chat)
Guest 1234: FITB
User6734: Nice! i'll have a joint soon.
User487: wish i was getting high too..
User8936: bout to smoke a bowl too

FITB by misguidedyouth June 29, 2011

FITB 

FITB is an abbreviation of fire in the booth which is a UK based singing place where rappers come to sing/rap

Did u see unknown t sing on FITB

FITB by Ukurban October 30, 2018

fitb 

"Finger in the butt." Generally used as a positive remark OR negative remark depending on how you view the act itself.
The act of slipping your finger in a girl's anus while having sex doggy-style. It can also be done as an act on its own without the intercourse part.

Example 1
Dude 1: "Bro, check out that hot babe!"
Dude 2: "Oh yeah, FITB!"

Example 2
Dude 1: "Bro, this sandwich is awesome!"
Dude 2: "Yeah bro, FITB!"

Example 3
Dude 1: "Bro, I just got kicked out of college"
Dude 2: "Shit bro, FITB!"

fitb by FITB January 12, 2012

FITB 

Freak in the bed

Mainly used on the internet.

Damn, Jessica is a FITB.

FITB by DaddyJT10 August 17, 2009

fitb 

-Abbreviation for "Fuck In The Butt"
-an unpleasant experience.

"That Drake sure is a fitb."

fitb by Nigga Stole My Bike June 24, 2006

FITB 

Fill In The Blank

Bill: Hey mike, FITB.... I _____ your mom, and it tasted like olives.
Mike: Yeah Bill, after _____ your mom I tasted olives too!

FITB by OhThatMakesSense May 11, 2013

Fitbitch

A person (usually female) who plays down the fact that they are wearing a fitbit, while simultaneously showing it off to everyone within hearing range of their upper-middle class voice.

Mindy: Hey Danae, is that a fitbit?
Danae: Oh, yes it is... It cost me $300 and it's the latest model, AGAIN, but I just use it to monitor my sleep patterns.
Mindy: Oh, Ok.
Danae: Ughh OMG, I'm at 6500 steps and Tabatha is at 8000. Now I will have to speed walk around Whole Foods in my yoga pants, just to get to my calorie target.
Mindy: Oh, Danae. You are such a fitbitch.

Fitbitch by Slap the Penguin August 12, 2015