A largely improvised explanation or definition by someone not an expert in a given field. A stickout may or may not be obviously incorrect.
"See that rock formation over there? That's called a 'stickout,' because of the way it sticks out."

or

Ron: "Discovered by the Germans in 1904, they named it San Diego, which of course in German means a whale's vagina."
Veronica: "No, there's no way that's correct."
Ron: "I'm sorry, I was trying to impress you. I don't know what it means. I'll be honest, I don't think anyone knows what it means anymore. Scholars maintain that the translation was lost hundreds of years ago."
by Crindy October 1, 2006
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