Sticking my hand into Cake's tub when I brought his first or second mouse home...He was only 100g or so, so the bite didn't hurt at all to the point that I didn't even realize he bit me, until I looked down a few minutes later! And saw a couple drops of blood on my hand!
Second mistake is that on my very first f/t feeding of Cake, I forgot I had to thaw the mouse....... I left a frozen popsicle of mouse in his tub for a couple minutes and wondered why he wouldn't go for it. I gotta say, that felt very dumb and not sure there are many newbies who forget to thaw. LOL
Thankfully, I had no husbandry errors and never did for any of my snakes, and I'm always really proud of that :B *wipes sweat*