I am an electrical engineer i have touched plenty of 12v and 24v...
If movies are you source for eletrical safety then yoi are a idiot....
Current has nothing to do with that because it doesnt matter that your car battery can supply 100 100000 or 10000GA 12V will not be enough to make a significant current flow through you because your skin and body resistence is way to high... basic like 6 grade physics with current=voltage/resistance (yea i know body is not purly resitive etc but its good enough) whoever said voltage doesnt kill but current does was a idiot... neither does its a combination of a bunch of factors that matter...current voltage time frequency etc...
I dont even need to write something for point 2 because you have shown to not know basic understanding about dc circuit analysis...wtf