Deleting or blocking a friend without any notification. Whereas, you can blame it on "the facebook glitch" and begrudgingly add them back.

This also works with tagging/deleting pictures among other uses.
Jayme: "Heyyy, why did you delete me on facebook?"

You: "Oh sorry man, must have been a facebook glitch." <quickly adds the frienemy back>
by eviltelepathicmonkey August 16, 2011
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