If you touch the contacts of a nine volt battery to your bare skin you generally don't feel anything; you might if there's sweat, you'll feel it on your tongue, but across two breasts worth of chest like I understood them to mean in the comment I was replying to?

Thats a fuckton of resistance compared to 9v of electrical pressure

Edit: I'm literally doing so as I type this. Even against areas of my skin that are more likely to have electrolytes and moisture like my underarms- I feel absolutely nothing. 9 volts is a pitiful amount of electrical pressure compared to the resistance of the body. Go get a 9v. Try it.