As a woman, I'm not offended by these ads and to be perfectly honest, I don't see/understand how they can be offensive to anyone. I don't find them particularly funny either, but they really don't affect me. I drink milk and will continue to do so as I please.
On a side-note, I dislike a lot of women because they are irrational and over-emotional. They don't think. Being offended is a choice and if someone chooses to be offended by this, that proves irrationality even more.