Catgirls, catguys.
Cats.

People who are like cats.
That stage between hentai and furry.
Cats.
Cat ears.

CATS.

http://www.audiocubes.com/product/Thanko_CATBUD_Cat_Ear_Earphone.html

Go get one :o.

>>2631
>xgirls, xguys.
>x(plural).

>People who are like x.
>That stage between hentai and (insert anthropomorphism based on variable x here).
>x (plural).
>x [component:]x.

>X.

Now, consider x to be the variable, pertaining to whatever you want thrown into typical ecchi/hentai as a pinch--just a pinch--of anthro flavor, and you have this board.

Example provided: where x = spaceship.

WHAT THE FUCK!

I ASK "What is the target audience for Futanari" AND GET SMOTE BY THE B& HAMMER OF FUCKING THOR BUT THIS COCKMONGLER GETS TO HERP DERP HIS WAY WITH NARRY A MINUTE OF LURKING AND IS WELCOMED IN OPEN FUCKING ARMS.

>>2645
actually, something like this that was simply an amplifier would be really cool. You'd have cat-like hearing for real.

>>2807

Shouldn't be too hard to wire up if you've got a bit of experience. There's pretty much always "spy" toys around that do exactly that, add that to this and boom, form and function.

>>2790
lol troll detected

>>2790
Probably because your question sounded like a trollbait, and the answer is obviously "people who are turned on by futanari".