My first sub drop was just a few weeks ago, and while I knew of it and what to watch for, I was most apparently not in the state of mind to recognize it in myself (and in fact, I didn't realize what had caused my complete meltdown until a week later) and I almost got myself fired when I spiraled into irrational anger and was found bloody-knuckled in the bathroom wailing on a metal paper-towel dispenser with no excuse for myself.

It started when I was pleasantly surprised by a quick session during my lunch hour. However, that time we took things too far for a couple reasons.
1) I tend to push myself to go further weather I really think I can take more "abuse" or not and so I failed to voice that things where getting beyond me.
2) We are still learning each other and so without my communication, my dom has a hard time determining what I can take and where I am at emotionally.
So, I probably gave her quite a shock when I broke the leather cuffs she gave me from the awkward position I was in. Of course she dropped what she was doing and moved to after care, but the time left in my lunch hour just wasn't enough for how far we had gone.

So, now we come back to that part where I am found an hour later in the bathroom at work beating on a metal cube with all my might. I'm lucky to have my job, but I've learned something I can maybe pass on from the experience. Leave plenty of time for after care and keep the potential for sub-drop in mind throughout the session, especially if you have plans for afterward. Never push your limits when you don't have time to recover. It seems obvious, but I had to learn it the hard way.

(Seriously now, I don't want anyone getting a bad impression of my mistress because I'm sharing her one mistake with you. )

BTW, my hands are fine.