Satellite ears 

The phenomenon or condition where a student will hone in on conversations to which students discuss without the knowledge of who is listening (because of "satellite ears"), until the person in question finds a point of interest in the conversation, and involuntarily joins in- suddenly making themselves vulnerable to the fact they were listening intently to the conversation without the students knowledge, approval, or comprehension...

(After listening to an entire conversation about Heroes)

Dude 1: Hey did you see Heroes last night?
Satellite ears: Omg yeah I did! I never knew Sylar had a sensitive side...
Dude 2: Whoa quick response man, considering we weren't even talking to you
Satellite ears: Er yeah haha (shifty eyes)
Dude 1: That guy must have satellite ears...
Dude 2: Defo

Satellite ears by Firelovesugar February 26, 2009

Satellite Ears 

African Wild Dogs, for their adorably enormous and round ears.

Google African Wild Dogs or Painted Dogs, Satellite ears won't return results

Satellite Ears by twist_ears February 28, 2011