5 Feet of Fury

‘The jelly doughnut myth is like claiming that an audience in Manhattan heard a politician say…’

“I am a New Yorker” and took him to mean “I am a New Yorker magazine.”

Cracked continues:

So why have smug people been making this claim for the past 20 years?

The earliest reference anyone’s been able to come up with is the 1983 spy novel Berlin Game. A fictional character claims that Kennedy said he was a doughnut. In reviewing the novel, The New York Times treated it as a reference to an amusing fact, rather than a reference to a completely made-up fact, and to this day, you can’t say “Ich bin ein Berliner” in a room full of educated people without having them shout something about a jelly doughnut at you.