Alright, I can't keep my mouth shut, and I'm awfully sorry for disrupting the thread, but saying "This is not humor, it's soft core porn disguised as humor," is incredibly unfair. Just because the artist drew the character in fanservice-y way, which is very typical for Manga, doesn't mean the humour isn't there.
If it's just your opinion, I can respect it, but there's undoubtedly a joke there, and the character design being slightly fanservicey doesn't change that.