Someone gained almost 100 followers in 1 day...but...?

[Brad]

Ok, I keep checking this user's Twitter page (we used to be following each other but he's not a good person and we had a spat and are no longer following each other).

He gained about 70 followers in the past day, and over 50 of them are porn spammers! Then he's tweeting things like "Wow I gained almost 100 followers in 1 day! Thank you!".

What do you guys think of this? Why would so many porn spammers suddenly follow him in 1 day?
No. He's not even a popular person...he's actually a 14 year old, and he only had about 330 followers yesterday, and now all of a sudden he's got like 395, and I looked at the people following him, and LOTS of them are porn spammers who weren't following him before.
@Zim...yeah, he's definitely the kind of person I could see creating a bunch of accounts and following himself. It's possible.