Alternative to blocking a follower on Twitter?

[galactic destroya]

i dunno exactly how to phrase the question, but here's the problem:
i have a follower on twitter who's posts are very inappropriate. i blocked them, but i don't want them under my followers list at all. get it? see, my dad follows me also to make sure i don't post anything personal, so i don't want him to see this person.
is there a way for them to be off of my followers list??
i only have four followers because i joined yesterday. so the emails i got were the "welcome to twitter" one, my dad following me, & my friend following me.
i only got TWO emails saying people were following me, even though there are FOUR.
but that doesnt matter, because i already blocked the person anyway, i just dont want their name to be under my followers list.