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1.
When one plays ignorant to a situation or accusation of their doing, the accused uses one or more of the following excuses:

1: I didn't say that

2: I didn't hear that

3: I didn't see that
"Man, that fucker burned me and didn't answer my calls, texts, or emails. He was using the Helen Keller Defense."

"Honey, the lights were off, I swear it was you!! I'm pleading the Helen Keller Defense."
by Kyndbudz January 26, 2010
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