A person who is a loser, and has a face. Generally this person just fails at life and will never be sucessful because he/she is a loser with an ugly face.
Person One: Sorry I'm late.
Person Two: Looooozah fayyycce.
Person One: No you idiot, it's loser face.
Person Twp: LIES it's looozah fayce you loozah fayce.
Interjection of CubanSpanish origion used when someone else smacks their head on something, falls, or otherwise causes themselves pain accidentally, particularly if you foresaw it happening. Likened to "wham."
You see your buddy slip on your ice-covered walk while carrying a case of beer.
"Fuacata! You alright dude? I knew someone would fall on that walk."