Yes, and Yaguchi is always saying something like "Hey that's discrimination" and if someone thinks they have gone too far with their jokes they should really stop crossing that line. Then again, the ball to the back of the head.. if it was me getting that ball to the head I would be laughing my ass off and wouldn't really feel discriminated.
But it's not jokes or discrimination. It's two mean spirited hacks taking advantage of the girls because they know they can't defend themselves due to the Japanese 'code of conduct' that is taught. The hosts are elders and can do and say what they want. You, as the junior, have to take it and be grateful for it.
I don't mean to say you are wrong for liking the show. I'm happy you enjoy it, I really am. But in my western eyes (and I admit that's probably the problem right there) it's a garbage show that relies on embarrassing it's guests and physically humiliating them for cheap laughs, made worse due to the fact that the guests are sitting ducks do to social conduct standards.
I applauded Yaguchi's attempts to fight back, but she was always quickly shot down by the hosts and received almost no support from the other girls because she was breaking the rules. I seem remember Yasuda coming to her rescue once though, but she got picked on just as much if not more that Yaguchi did.