Just like Brandon said. The feeding responce was probably initiated. I actually got stuck at twice this monday at feeding time(I love my females wicked feeding responce ).....but that does not happen all the time. To limit the bp from thinking your hand is food, be sure and use something to hold the mouse when feeding f/t or p/k rodents (i use tongs, some use hemostats) and be sure to get the rodent or any other animal smell off of your hands before handling. I always wash my hands before and after handling my snakes. If you fed on Sunday then tried feeding today, does that mean you are feeding every 3-4 days? I recommend feeding ball pythons every 7 days. Also, you will want to avoid handling two days after the meal to prevent stress on the bp.

...nothing to worry about with ball pythons...a bp bite is like a pinch with little teeth...nothing too painful

Hope that helps.

EDIT: I just read the other thread post. You might want to stop using the seperate feeding box. That would eliminate handling during feeding time and will prevent you from being confused with food.