Baseball, hot dogs, apple pie and Chevrolet.
They got the first three right at least.
Recently I showed my teenage son a youtube of the "I'd like to teach the world to sing" which later becomes "I'd like to buy the world a coke" ... "it's the real thing" ... he couldn't believe it. We both howled with laughter. It's such a late 60s early 70s co-opt of the hippy type songs that were prevalent then, and is really funny now, looking back on it.