Sometimes I get static electric shocks when I touch certain metallic objects. However, I seem to be able to prevent this by grounding myself by first touching that object with a small piece of metal, such as a coin. From what I gather, the reason this works is because the leap of charge occurs at the boundary between the coin and the object, rather than between my fingers and the object.
However, what I am confused about is why I still do not feel anything. Doesn't that static charge also pass through my finger on the way to the coin? So when the coin makes contact with the object, I should feel the charge pass through my finger into the coin? Or is it something to do with the fact that the contact area between my finger and the coin is much larger than that between the coin and the object, and so the sensation is diffused?