In 1963, President John F. Kennedy made a now infamous speech in which he pledged the United State's support of West Germany as they tried to form a democratic government. To give the speech just a little more punch, JFK decided just before he took the podium to emphatically proclaim, "Ich bin ein Berliner!" which means, "I am a Berliner!"
What he did not know, however, is that berliner happens to mean "a little sugared donut" in German and is quite a popular little pastry. So really, he emphatically proclaimed, "I am a little sugared donut!"
I have long been proclaiming that "I am a fruit loop!" so I totally know where he is coming from.