Cami Secret is a false shirt front intended to help women avoid showing too much cleavage.
The infomercial is unintentionally funny. Funnier still is the parody spot that combines the Cami Secret infomercial footage with a different voiceover to sell the fictitious Boob Apron.
Hell, yes, the parody is sexist. But intentionally so.
Personally, I think the parody is much more insulting to men as it reinforces stereotypically piggish male behavior.
Click here to watch the actual infomercial for the Cami Secret. You don't have to watch the whole thing to get the idea.