I first discovered someecards when my friend Kirsten sent me one for my birthday almost 2 yrs ago and blogged about them later here. They really cater to my sometimes twisted, sardonic sense of humor (their logo is: When you care enough to hit send). OK, so they aim to be offensive, but someone's always going to be offended by something someone said. Well, now they're offering witty tees. I don't know if I have the, um, sassiness to actually wear them in public (layered under a buttoned-up cardigan, maybe).
Here are some of the less offensive ones: