Not any more "weird" than the school girl fantasy. I don't get how this is disturbing; people like to role play sometimes, and taboo fantasies are as common as dirt: the school girl, the sweet and innocent girl who isn't really so sweet and innocent, the babysitter, teacher/student, nurse/doctor/patient, secretary, maid, officer/prisoner, the neighbor, the married man/woman, the prostitute, the stripper; the list goes on and on.
If you're offended on religious grounds, okay, I can see where you're coming from, but I still don't understand completely. Sexual fantasies are harmless, and if you're not into it, or find it disturbing, then it's just not for you. That doesn't make it "wrong" for everyone. I don't get furries, or adult infant fantasies, but if other people are into that and they find a partner who shares their kink, then who cares?
I'm sorry if I seem brusque, but there are enough people out there shaming other people for their harmless sexual quirks just because they don't "get it." Human sexuality is vast and varied, folks; you're not going to get every kink, every fantasy, every taste, every preference, every identity--and that's okay. As long as no one gets hurt, it doesn't really matter.