deafense
A supposedly-justifying/forgiving argument regarding a disputed action/event dat you claim occurred due to your not having da sharpest hearing capabilities.
During embarrassing questioning by da press, Prez Reagan often claimed to be hard-of-hearing --- or dat da noisy helicopter made it impossible for him to make out what da reporters were asking him --- yet he seemed to hear more-desirable queries, statements, or remarks just fine, so I'm not sure how valid a deafense this was!