A cake baked for one's deceased mother on the anniversary of her birth or death. Also means explicit stuff that burns itself into one's brain after reading the article on Urban Dictionary (i.e. Alabama Hot Pocket or similar).
"Unfortunately, I didn't realize that Ghost Cake is a really bad thing on Urban Dictionary, and now it's burned into my brain."
In Halo 2, when you're playing co-op. You and your teammate takes over a par of Ghosts, and the almost only thing your mate is doing is to smash his Ghost into fire and dust. No sence of care at all.
Dude 1: Stop smashin' in me! Man, your Ghostcare sucks!
Dude 2: Whaddya mean? *crash!*
1. The act of seeing a floating object or invisible entity out of the corner of your eye
2. Glancing out into the hallway or into the corner of a room and mistaking an inanimate object for an entity watching you.
3. Seeing a face in a window that was never actually there
Girl 1: so last night I was sitting in my room and I was ghostaken because I thought I saw a ghost.