FBD 

Future baby's daddy.

I love that boy so much, he's my FBD!

FBD by jub2468 December 20, 2008

FBD 

Free-Body Diagram
A picture, drawn in physics classes, that shows each force acting on an object. The object is usually shown by a dot, and only shows the forces acting on THAT object, hence the name, "free-body" diagram.

Let's just draw a FBD on the board here of a ball rolling down a ramp

FBD by flash2lightning June 28, 2009

FBD 

Free Beat Down, or a beat down given to someone for free

I gave that punk-ass nug an FBD for the low low price of free 99

FBD by MJMizzle September 2, 2006

FBD 

-Fucking Bored Day
-Fucking Boring Day

An expresion used when your day sucks!

I have a FBD

FBD dude!

FBD by Sky Zer0 November 14, 2010

FBD 

FBD = full blown drunk

When you've gone past the point of tipsy and on your way to total slurring.

Krissy: oh I couldn't have another drink. I'm already tipsy.
Adam: Tipsy?!?!?!? You're FBD!!!!

FBD by zjmj7 June 11, 2010

fbd 

An fbd is a facebook douchebag. This includes males with too many friends at least 150 of which they will never converse to or a female with an excess of friends at least 200 of which they will never converse with

That guy thinks he is cool because he has so many "friends" on facebook but he is really a fbd.

fbd by Alex Galan and Nick Bayati October 24, 2008

FBD 

FBD or Fuck Boy Disease is when a girl gets attached to a fuckboy after him 'hitting her up' or 'sliding into her dm's'.

Him: Hey girl 👅
Me: *to self* "Not trying to catch a case of FBD!"

FBD by kcn April 17, 2017