Why would a guy block me for sending him pics he asked for just because they were random pics from the Internet and not pics of me?

I don't see how anybody could be so ungrateful. He wanted pics of women in jeans, so I sent him these:
Just because he's found out they weren't pics of me (which I never even claimed they were) he's now blocked me. Have you ever encountered such an ungrateful troll on here?