Well given what Kellogg's suggests will happen if you lose weight with the almost painfully stupid Special K challenge (just eat small amounts of cereal instead of substantive food and low and behold you'll lose weight) it would seem Kellogg's doesn't think too much of folks who are obese.
Taking an antonymous look at their ad yields something like this:
If you've got weight to lose you're probably a sad, anxious, dull, drab, meek, boring, timid, angry, cowardly, pessimistic, insecure, weak willed, lazy, stuck, indecisive, slob.Gee Kellogg's, you guys really are special.