On the other hand (see below), this is an example of appropriate risque humor.
I can't endorse this organization since I don't know much about it, other than what Ta-tas says in its mission statement, part of which reads:
Ta-tas® Brand Clothing cares about women and their families. That's why we are committed to making a significant contribution in the fight against cancer. We do this by giving 5% of our gross sales to the fight against the disease. That means, with every sale, every item, every day, all year, every year for as long as we exist, we are fighting cancer from every angle we can. And since our launch in 2004, we have given almost $125,000 to the fight against cancer.It's not a big company. But it appears to be a small company with a conscience. There's a lot of hilarious clothing and accessories on their website, so go check it out here, and be happy you contributed to a good cause.