Half a croissant, on a plate, with a sign in front of it saying '50c'
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Fake loud headphones

 Simulate loud music when you can really hear everything around you.
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Headphones with little speakers on the outside but none on the inside. The outside speakers would only reproduce the high/mid-high frequencies so that it seems like you're blowing your eardrums out.

This could be useful in conversation avoidance or sneaky eavesdropping.

—Fishead, Sep 12 2000

Trigger Happy TV http://www.triggerhappytv.com/frames.htm
Uses the headphones to confuse and provoke passers-by [Tlogmer, Oct 04 2004, last modified Oct 21 2004]

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       Add an antenna, so you don't have to carry around a portable player to plug it into.
—absterge, Sep 12 2000
   

       saw this in MAD magazine once
—nano_mars, Mar 16 2001
   

       They could be noise-cancelling, too --- either cancelling their own noise (for better eavesdropping) or cancelling exterior noise (for better pretending-not-to-be-able-to-hear-people).
—wiml, Mar 19 2001
   

       Baked, on the british series "Trigger-Happy TV". The speakers are pretty big, though.
—Tlogmer, Jan 23 2003
   

       When I posted this idea it got fishboned and [m-f-d]'d for redundancy.
—snarfyguy, Jan 23 2003
   
      
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