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An area of an email or a section of an email that should be deleted prior to forwarding or showing but is not. Instead it becomes a dangler, and hides in the body of the forwarded email until it is read by someone who will be unintentionally affected by it.

Oh man, we just got busted by a dangler. When I forwarded Shannon that thread we had going last week, I forgot to delete that section where you said she had a giant booty. Sorry!
by Sean P. Riley October 17, 2007
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