FBT

acronym: FaceBookTroll

People that feel the need to make comments about every one of their friends posts/comments because they have nothing more pressing to do.

They also tend to double comment before anyone else can respond.
Emily: "Can believe how many times Gerald commented on your picture?"

Justin: "Tell me about it... He's such an FBT!!"
by 52kaerfegac August 17, 2009
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