Cats when you...

yeah, this is because they are either playing a game with you(their goal is to trap your hand) or, they just feel uncomfortable because you are touching their most vulnerable spot. A hard strike against the stomach could almost kill them.

well first they like it, then they go sicko mode and try to bite your hand off

try it with a pair of gloves, not those like soft ones that get your hands wet in snow tho. It's fun. You have full power over your cat >:3

So true!