Why did he do this to me? (Read details)

Ok, so this guy inbox me, keep in mind he inbox me! So he just asked a lot of questions, what’s my name, where I am from? kinds of questions.
Then he says I am a Nigerian Scammer and then blocked me.
Now, I thought scammers are people that ask for money, I never asked him for anything, and mind you he’s the one that inboxed me.