In an unrelated discussion on slashdot, a reader linked to a shop selling many silly outfits for very small children. The shopkeeper politely divides the clothes into three degrees of offensiveness. There are only a few of these that I'd consider putting on my kid (e.g. "You're just jealous that I can still crap in my pants" or "") and lots more that are funny (e.g. "Living proof: Tequila works", "I'm VERY special because birth control is 99.5% effective").