Hello everyone!

So i went riding today and i'm going about 18mph (i'm on a mtb BTW with knobby tires) and these two roadies pass me at 21 or so . So i get on their wheel, about two miles later one of the guys turns to me says. You know what you're doing is unethical?

I said, What is? He says following my wheel without permission. I almost fell of the bike when he said that

We went back and forth with it and i told him i've been riding there for 20 years and never heard of such thing. I also told him sorry if i hurt his feelings for riding his wheel and not asking first.(sarcastically of course) I told the guy that was his opinion and that i was going to keep doing it.

So is there such a thing? Was i wrong? Flame on i can take it.