1. facecake
Cake with a photo of a persons face on. Referenced in Scrubs.
I smell facecake!
Did somebody say facecake?
2. FaceCake
adjective; can basically replace any insult, except for homosexual references.
Usually meant to leave the "what the fuck?" effect.
Jen: dude, my boyfriend just fucking dumped me!
Cassie: what a facecake!