<human>: Can you condense the text into a few key points?

I work in a meat department, and I am recently learning how use the saw as a meat cutter. So today I was asked to cut some bone-in pork, it was a cut I had only done once before so after finishing I said to the other cutter "Hey look I didn't even lose any!" referring to my fingers.
 Now here is where I fucked up, our new clerk is a man who is older then me and he has worked in a meat department before this. I did not know of his history at the time I made the joke, but right after I made it he stopped working and walked up to me. He held up his hand and I saw that one of his fingers was too short and a bit crooked, he then looked me right in the eye and said "You best not joke like that or you might lose one yourself." I couldn't say a thing as he returned to work, I just went back to cutting feeling like a total ass. Later I found out he had loss his finger cutting meat years before.
<bot>: I made a bad joke about cutting my fingers off in the meat department without knowing that the new guy had lost a finger cutting meat in the past, thus making an ass of myself.