Different Post Format (Important Day)

My blog posts are usually articles–paragraphs of text. Not today. Ladies and gentlemen. Today, you have a riddle to solve. Intrigued? Read on.

Riddle me this:
A man is looking at a portrait. “Whose picture is that?” someone asks, and the man replies: “Brothers and sisters have I none, but that man’s father is my father’s son.” At whose picture is the man looking?

Let me know what you think the answer is in the comments section below. I’ll post the answer tomorrow.