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(Noun) - 1) The outing that one partakes in when the desire to consume a Cinnabun becomes so great it can no longer be ignored.

2) A fat person's Saturday night.

Note: Not to be confused with Cinnaruns, which is the massive, runny dumps that occurs after eating too many cinnabuns.
Jayna: Lets go get some cinnabuns. I'm full, but I really want some of that frosting.

Adam: Sure, I'm up for a cinnarun.

Jayna: Oh man, I think I've actually still got the Cinnaruns from last Saturday. Better put a hold on that.
by The Real Sir sNills February 04, 2012
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