Transliteration

In China, we have a lot of words are transliterated, such as mango, we called 'mangguo' . The similar pronunciation. 
And I think of a joke, if a person is called Serious, other man called Kidding. 
We always ask people: ' Are you serious?' , and we always answer:' No I am kidding.'
But if people asked Kidding the same question, I think Kidding will be crazy. 
'My name is Kidding!! Why people always ask me "Are you Serious?" '!!!!!!!
And if people asked Serious the same question, I believe Serious will be worry.
'I introduce myself a lot of time!!! Why people can not remember my name!!!! '
That is story of transliteration.................