T shirts -are they harmless??

I was reading the Audrey Brasich blog I have listed to the right .

In one of her entry's she did a posting about these t-shirts

It's hard to believe that someone is printing these and especially hard to believe that a young girl would want to wear one. What is it about our culture that promotes this as a desireable career?

Am I just being puritanical? Is this really harmless humour? What would you say if your 10 year old ( or 12 or 14, or 16, or 18) sister/daughter/ wanted one of these? How would you address a group of young people that were wearing these tshirts? Or perhaps you are working with young boys that wears this this one that says Liquor Up Front, Poker in the Rear

The add for this shirt says 'A sexy pinup girl is the centerpiece of this pub logo parody for the fictitious Last Chance Inn: . A funny shirt '

What do you think this does for teaching about respectful and equal relationships?