Allusion

An allusion is a reference in a work (art, entertainment, or most commonly found in literature) to another work (not necessarily having to be in the same medium it was originally introduced.) For example

If you've seen that scene in Family Guy, you probably were left thinking something along the lines of

See more on Know Your Meme
BUT, it's actually relating to this

^^That is a commecial back from when our beloved Dr. Preston was a mere lad (1930's or so?) and it was about Doggie Chow.