In my first two years in high school I had at physics a woman teacher that wasn't too good at it (to use an euphemism) (though she was good looking ). Usually when hard problems were to be solved, I was asked to do that at the table (I was the best at math and physics in my class, and many others ), and sometimes I used methods she didn't like or was unfamiliar with. So, in several ocasions, when she tried to convince me that her method was better, we started solving the problem in parallel at the table, each one using his own method. And usually I was winning...

Anyway, it's fun to remember things from high school.

And yes, I had some interestng "conflicts" in college too.