I saw this public-service announcement inside a 14-Mission Muni bus.
Apparently real life imitates the Internet so much now that we no longer need sentences — just a series of meta tags (the words that allow search engines to find websites). Here we have: "Latina...family...smiling...no cavities...I am." No matter what order you put these words in, they don't really make sense.
Maybe I just don't get it because I'm no longer in the demographic coveted by advertisers (especially in this case, since I'm not a Latina child).