Popcorn and tortilla chips

I was hungry for a snack the other day and I had nothing handy - nothing ready-made, that is. What I did was grab some tortilla chips - I don't remember the brand but they were the pricey kind - not the dollar-store brand - and some (real) butter. I put three dabs of butter on top of the chips and threw the mix into the microwave and about 30 seconds later tasted something that resembled popcorn - not the shape or form but the taste. I shouldn't have been surprised since tortilla chips are made from CORN. The only thing missing was the beer.