I don't mean to be rude, but back in my first year in college, there were guys who tried to impress ladies by saying puzzling things.
My course was software programming, so there were guys who shared their programs, then looked at mine and said,"Now that is the not the best and shortest way you can write that", or "Don't think that is orthodox". And even worse, "Do you want to copy from my program? Mine's working!".
I was puzzled and defiant, worked hard together with my good girlfriend. We both achieved good grades, while those guys had to retake the subject. Turned out that they weren't any wiser than we were, and wasted their time boasting.
If he couldn't explain what he meant, he probably didn't know what it was. He could be watching too much "Britain's Got Talent". And to use the word "cheating" when you were only having fun singing together ... hmm... It'll be tiring to go karaoke with such a person.

I think you would learn much more if you talked to rosfrog, AnnC and other experienced forumites here.

They are knowledgeable and precise.