Since this horse is black, bot legs stuck out like a sore thumb so I get out the lava block thing. It was mostly used up and caked with dirt and it wasn't working well so I switched to a bot knife.
I was squatting on her left side trying to scrape bot eggs off her lower right fetlock. She stomped at a fly and I lost my balance and fell back on my left hand. I looked up and noticed she was bleeding! My other hand had sliced her leg open with the bot knife just above the knee!
Luckily it wasn't too aweful and only required 6 stitches... Be careful and don't make the same mistake I did!