Someone who finds your facebook account logged-in when you're not around and proceeds to change your status and/or profile information.
I think Mike may have been visited by a facebook fairy. His status says he can't come over to watch the game tonight because he's decided to adopt 20 cats and is knitting each of them a little pink sweater to "keep the kitty warm and pretty." LMAO!
The act of marking one's significant other on Facebook through cute, flirty comments and a plethora of likes, so as to make evident to others that there is a relationship in existence. Akin to a dog peeing on a tree, this is a person fairy dusting another.
Synonymous with Twitter Glitter, the same technique but used on Twitter.
A riff on the "glitter" technique some women use to physically mark men with glitter (wear glittery cosmetics, hug/kiss, it rubs off on him, and if he shows up to another woman--she knows there's another woman already in his life).
You: I got a C on my math test...
Facebook Fairy Godmother: You're so smart! I'm so proud of you! Keep up the good work! You're amazing and clever and you did better than a lot of people, still!