The timeframe right before financial institutions are about to "close the books". The time when you're not quite done, but not quite sure how much longer it's going to take to finish.
Boss: Are far along are you on closing your books?
You: Yeah, I'd say I'm stitching the spines right now.
You: Yeah, I'd say I'm stitching the spines right now.
by kj_tennessee February 17, 2021

by old English April 15, 2016

It does not mean your depressed it just means you are staying to yourself and not giving in to anyone. You don't really care anymore but you actually do care. It's basically a dysfunctional bipolar confused feeling. Sometimes people use a code 9/10 to acknowledge that they are experiencing a cold spine.
by Any no outs May 27, 2018
