I was looking at the Wikipedia article on baby talk, and it starts with this gem:
Baby talk, motherese, parentese, or child-directed speech (CDS) is a...
Further down:
Child-directed speech or CDS is the term preferred by researchers, psychologists, and child development professionals.
WTF?!?!?!!! My favorite part is the acronym. First, they come up with a much longer phrase.... then, since it's too long, they shorten it into an unrecognizable acronym. :) At least "baby talk" is still the main title of the entry. :P