地獄耳

Meaning

1. nexp
   being readily aware of rumors and gossip; being quick to learn secrets; having sharp ears
2. nexp
   ability to remember everything one hears

Example sentences

• お前、どこでその話聞いてきたんだよ。本当に地獄耳だな。

  Where'd you hear that? You've really got sharp ears.

• あいつ、ホント地獄耳だからな。

  He has really big ears.