How about mis-speaks (sp ?)....

The fellow meant to say, "Honey, please pass the salt.", but, what he actually said was, "You bitch. You've ruined my life." Talk about a Freudian slip.

The most famous was by JFK. During a speech in Berlin, wanting to show his solidarity with the citizens of Berlin, he meant to say in German, "I am a Berliner.", but, actually said, "I am a jelly doughnut."