"Name calling" joke

An English teacher examining students of his class
asked a boy named Surya Prakash his name in
English.' Sir, my name is Sunlight,' replied the
boy.
And what is your name?', the teacher asked
another boy named Jeewan Nath.
'Sir, my name is life Buoy.'
The third boy named Akash Deep when asked the
same question answered,' I am Skylamp.'
The teacher turned to the fourth boy and asked,
'What is your father's name?'
The boy whose father's name was Prabhu Dayal,
replied,' Sir, his name is God-is-kind.'