If it's ears, wouldn't it be sonar rather than radar?
It might be a reference to the ear-like radar of Tenryuu or Murakumo.
Whababa!?
You got radar-ears or something!?She totally did it knowing everything, didn't she...Kuma-neesan's such a meanie.It's the love of your older sister kuma.You really do share the bed with it kuma.
