Here is one for you.
I always knew about my younger brother's remarkable overall body strength, and especially his hand strength - which comes from hard work only, as he has never in his life touched a dumbbell, barbell, or a gripper.
But the other day he really stunned me with a grip/hand strength feat he came up with on his own. Look at this regular crown cap from a beer bottle and what he did with it:
Yes, it is bent BACKWARDS. Can you believe he did this with one hand only, that is, with thumb, index, and middle finger?