"I know it's not cat food, but what exactly is it that they put inside of tinned ravioli?"

This quote by Doug Coupland is a funny means of expressing complication about the components of tinned pastas. It indicates that the audio speaker realizes that the materials of the tin are not feline food, but is still uncertain of what it in fact is. This could be interpreted as a discourse on the absence of transparency in the food industry, as many people are not aware of what is in fact in the food they are eating. It might also be interpreted as a representation of the speaker's interest and desire for more information about the food they are eating. Inevitably, this quote is a humorous way of sharing confusion and a wish for more information about the contents of tinned ravioli.