That is exactly what I thought. Well, not the humpin' hug (which is genius BTW), but the fact that she has her legs wrapped around him is NOT a brother-sister type thing, and yes I know they aren't brother and sister, but that's how they described their relationship. I honestly DO NOT CARE what their relationship is. But that is not a brother-sister hug. I would throw up if my brother tried to hug me like that.
OMG yeah, that is totally fucked up.