Top Definition
Facebook Fly: n. a nosey person who lands on your wall, uninvited. Facebook Flies typically do not have a Facebook account themselves but the maggots are able to carry out their mission via the aid of a Facebook Judas. ©
Mom: I heard that you were drinking last night.
Sarah: (shocked) How do you know?!?
Mom: Your Great Aunt Sally told me.
Sarah: How does she know?!?
Mom: She saw it on your Cousin Sue's Facepage.
Sarah: I hate that old nosey Facebook Fly!
by 5ft9andfine September 29, 2010

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