1 definition by Lady Phantom

A drug that can be smoked or injected, the ending effect is looking like complete crap.
Person No.1- "Dude wth happened his weekend, you look like crap."

Person No.2 - "Exactly, haha I've been doin too much fatbird."

Person No.1 - "Holy crap."
by Lady Phantom December 28, 2011
Get the Fatbird mug.