Somebody who always seems to know where everybody is at all times, even when huge amounts of effort have been taken to ditch them.
Originates from the way in which they travel mostly through the rafters, so as to stay out of everyone's awareness like a ninja
Person 1) Wow... I can't believe it, we managed to ditch Barfield. Now to spend some quality time with the amigos without jokes being undermined etc.
Barfield) *sprints along rafters like a Shinobi, darting from the shadows with unprecedented stealth* Hey guys, what are you all doing in town? You told me you all had the plague... You weren't tryin to ditch me, were you?
Person 2) Jesus, you're such a fuckin' rafters ninja
by Andy Hutchings January 4, 2008
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