This is American
This is retro
This is Kool-Aid
It represents a part of old American culture. It's an artificially-flavored drink usually colored in red and it has been there for some time. I personally like the the Kool-Aid Man (it's mascot) who's a big frosty pitcher with arms and legs. He often says "Oh Yeah!"
Watch the commercial below and others, but be careful not to expose yourself too much to it...