I have few questions,which have to be Cleared!!!

Question:
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1)Why do feel like a electric shock just hit us,if feels pretty often at times.

2)when you suddenly hit your elbow.(I'm not sure,whether only elbow or any part).we feel,like a Burning sensational,current shock...etc..(sure everyone experienced once atleast)why does that happen and what is that called?!

3)Everyone heard people saying sad endings on our most favourite manga/anime Cartoons,which are Shin chan and
doraeamon,people say..they both died eventually (shin chan in a accident and
(doraeamon/nobita suicide)
Are the characters real? And in the last episodes of the cartoons..did they reveal that they had died,what are their ending and are they real?
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you can research on it and tell..but,don't copy paste it
explain it​

no irrelevant answers,it too much..bit please ANSWER!​