Oh hey, I'm in this screenshot making an off-color comment. We can debate misogyny and such, probably won't be very productive.
The thing I find interesting in this: "Italians Do It Better" is an inherently sexual statement. Everyone knows that IT is sex and maybe some other reference with this style of bumper sticker meme. That's what makes it funny. So then, is it wrong to make a sexual joke about someone who is wearing a funny sexual statement? I don't think so.
If she were wearing a plain tee or some other logo, I wouldn't make a sexual joke. This feels like white knight silliness to me.