Do heterosexuals identify with the sexual terms of "top" and "bottom"?

In gay relationships, both male and female, people often refer to themselves as being a “top” or a “bottom”. A top usually means the dominant one, the penetrator, the one who gives the pleasure. A bottom is the submisive one, the one who get’s penetrated, or the one that is pursued.

I see these terms as stemming from the fact that gay relationships do not typically follow gender norms. But, many heterosexuals do not conform to gender roles either.

Do heteros use these terms? Do you know someone who does? Do you? Why? For what reason?