In a frying pan of appropriate size for the amount of corn, heat enough butter or margarine to coat the bottom of the pan.
When the butter is sizzling, add the corn.
Season with salt, pepper, garlic powder, and chili powder to taste.
Fry until it's as done as you like it; the longer you fry it the chewier it gets. Depending on your tastes, this may be either a feature or a bug.
Sprinkle some lime juice over the top.