Nice job! I'm impressed about you hitting your thumb with no flinch, no swearing - you must have just grazed it. (Either that or you're a better man than I am, which is a scary thing for us both!!)
Actually when I hit my thumb, you could hear a nice thud!
N from the bruising and the way it still hurts, I would have to say it was a good solid hit, no grazing! I did become protective of it after the hit trying to keep it out of harms way though. One thing I learned log ago was to complete whatever task and lick my wounds after no matter how much it hurt.
Heck, my forefinger on my right hand only recently has started growing a good solid fingernail. That finger has taken a beating more times than I care to think about. I've hit it so many times with a hammer, enough where the skin came off. But, I just switched over to having my middle finger hold the nail and kept on going. If that doesn't make your butt pucker, how about this incident! I was using an electric chop saw and the middle finger from my left hand decided to jump in front of the blade. Actually cut it half way through back in January of 2007. With blood dripping everywhere, I held it up so then I had blood running down my arm. I looked at the wound and you could see right through the center of my finger ............. Now here's the good part! I got out a needle n thread, cleaned up the wound and then sutured it together. That was rough! Then I took some gauze, wrapped it up and taped it. Then added some duct tape to keep it in place and went back to work. I did curse once on that one. I used the s word! That fingernail has grown in crooked ever since.
One thing to keep in mind, I have 6 brothers so I learned early on not to exhibit any pain or become vocal even when I wanted to scream because it hurt so bad. I'm not tough though, you will still see the tears streaming down my face. I never quite learned how to suppress those.