The phrase to be used when you wish to correct someone on a point they have made which is obviously incorrect, but when you have no intention of making the person he uttered the point, feel stupid or inadequate.
Person A: Is Twilight that movie with wizards?
Person B: Ah, no you've made a Baker's mistake there, that's Harry Potter.

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(It can be used in a student/teacher enviorment)
Teacher: What is the eighth planet?
Student: Er, Pluto?
Teacher: Oh no you've made a Baker's Mistake; it's Neptune.
by Amoc910 October 10, 2011
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