This is obviously about misheard lyrics and the dangers of EFL. Imagine two Japanese businessmen, bombed out of their minds at their favorite KTV place, listening to Lady Gaga.
A: Did you hear that? She just sang "duck her face!"
B: No, it's "poker face".
A: Really, it was "duck her face". I wonder ...
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In Chinese: glasses are yanjing; eyes are yanjing, and the beer of Beijing is Yanjing. When speaking, the difference is in the tones. Did I just order a glass of beer or a glass of eyes?