:::::::::This tells me that "anyone ... who reads the primary source should be able to verify that the Wikipedia passage agrees with the primary source. Any interpretation of primary source material requires a secondary source. Examples of primary sources include ... television programs." Pointing out where some animators have put an album cover as a background Easter egg, or where Cartman says "Charade you are" is totally verifiable. Of course others are interpreted references, but many aren't. So, charade you are.