Teacher You Nike Airs are a FAKE!

So, I decided to dress down one day last week and I wore a pair of sneakers to school. I normally dress rather casually but I never wear sneakers to school. I guess I was being a rebel this day lol. It was not until my second period class when a student keeps looking at my sneakers.

I did not really pay that much attention to the student until he started making funny faces. He then proceeds to raise his hand, I call on him and this was our convo.

Me: Yes, do you have a question?
Student: Yes, teacher your Nike air's are a FAKE! You get in Korea?
Me: Ummmm no they aren't, I got them from America, from footlocker.
Student: No, teacher let me see ( with his hand extended)
Me: OK, here ( as I give him my shoe)
Student: OK, teacher these are good, they are AHSA (awesome in Korean)!

So, I guess I was a bit flabbergasted more a fe reasons, 1 being IF i really did have some fake shoes on, did my student just try and blow up my spot???? and 2 how and WHY, does this little dude know how to tell if Nike's are real or fake??? I guess the world may never know lol
Still Seoul Searching.....