Brothers and sisters have I none, but.....?

Question

guess the following.

Brothers and sisters have I none,

but this man's father is my son.

Brothers and sisters have I none,

but this man is my fathers son.

Brothers and sisters have I none,

but this man's son is my son.

Brothers and sisters have I none,

but this man's son is my father's son.

Brothers and sisters have I none,

but this man's father's son is my son.

Answer 1

His own son

Answer 2

he is my son

Answer 3

that's very interesting...and the answers are :-

1. ..."This Man" is my grandson.

2.   I am "This Man".

3.   I am "This Man".

4.   "This Man" is my father.

5.   "This Man" is my son.

Answer 4

Brothers and sister have I none,

but this man's joke is lame.

Answer 5

  it goes:   brothers and sisters i have none

               this mans father is my fathers son

               and he is looking at a picture of himself.