Okay, so puns aside, a cat bite on your hand is something you normally shrug off and don't think about, outside of the irritation while it heals. Heck, I have a cat and play with her all of the time. Yes, I let her bite my hands because I know that she's just playing. Unfortunately, there's evidence to support that this is exactly what you don't want due to bacteria that can get transferred from the cat's mouth into your hands' joints. The result can be painful and dangerous.