Lol I'm err... Very bored right now so, I shall erm... Post some of this person's riddles It's not exactly like it shd be since I randomly thought of it try solving it without checking in the Internet. Lol. The simpler you are, the easier you can solve it. So, think simple.
Here goes:
A man looked at a portrait and said these words~
"I have no brother or sister. Incidentally, this person's father, is my father's son~"
Note the first thing you think of~
Now answer this: Who is the person in the portrait?