With a battery that dead I'm surprised you could jump it. In my experience when the battery is that discharged it acts as a resistor.
Nah, it's possible. I've done it a couple of times when the car was so dead, even the clock had stopped.
I tried to jump my parents 09 Mercedes C-Class, but we could never get it to start. Turned out it was leaking acid and that would probably be a pretty good reason why it wouldn't start. I have only helped other people jumpstart their cars, I have yet to come upon someone in distress that didn't have help already.
-leaking power severely somewhere.
You know how many people aren't even aware rear fog lights exist? "Why is that guys one brake light on? Gosh it's foggy."
I do my best to help people. It's the right thing to do.