There was a scandal a while back where Kraft was calling a dip 'guacamole' despite having barely any avocado in it: http://articles.latimes.com/2006/nov/30/business/fi-fakeguac...

"We think customers understand that it isn't made from avocado," said Claire Regan, Kraft Foods' vice president of corporate affairs. "All of the ingredients are listed on the label for consumers to reference."

I imagine so, but I have not seen it.

That said, I see guac thinned all the time with salsa (esp. tomatillo-based salsas).

Sometimes sour cream, too.

That is criminal.