1 definition by Let it rain Mcilvain

A man or woman that looks extremely good in their photos on facebook, but in person is extremely ugly. Easily fooled by teenagers. Original pictures often changed by editing or "piknicking" the photo.
Sawyer: Dude, this chick looks so hot in her facebook pictures.

Peter: Don't even bother man, I thought the same thing until I met her in person.

Vaughn: Guys, she's a Facebook grenade.
by Let it rain Mcilvain January 8, 2011
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