The act of smoking an entire blunt on your own.
Bra, I'm finna face up this loud blunt.
by BCashKy859 July 13, 2016
To break up with someone on facebook without notifying the person in real life.
Holy crap Minger and his girlfriend had a faceup, I knew before he did. What a tool bag.
by Korbdizzle August 28, 2008
the face u make when you eat something really sour or nasty; thiz face
man i couldn't help but face up when i tasted those sour skittles
by africaliberia March 07, 2009