Since at the time of this writing I have three jackets with cat ears, four hats, and a headband pair, I was about to come into this topic like UH, YES! 
But I see that we are talking about this very specific and wonderful kind. I would want to wear them... of course, the results could range from slightly to very embarrassing depending on what made them pop up...
When my boyfriend saw these he wondered if mine would always be standing up because I'm always thinking (overload of creative, and woman spaghetti-mind in general). That makes me wonder if the difference between men's brains and women's brains would be picked up by the ears. I have read before that men can sometimes be thinking about absolutely nothing, and that women go crazy because they can't comprehend it (box-mind vs string mind analogy). It would be neat to experiment and see... Also, I would like to drink a bottle of Pepsi and observe what my ears did, because I swear when I have caffeine my brain is going one hundred gazillion miles a minute.
Hmm.. I wonder how certain *other* substances would affect the ears...
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“When I stand before God at the end of my life, Aspiring writer-artist.
I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me.'”
— Erma Bombeck ▬▬▬▬▬▬▬▬▬▬ஜ۩۞۩ஜ▬▬▬▬▬▬▬▬▬
Works in ProgressTwelve - love story of an A.I. and her programmer
PAW ★ PRINTS - Laika in the Space with Tetris