Thank you, finally someone said it!
"Top" and "bottom" make sense maybe in the first three minutes of the relationship. If things continue to go in one way only, you've find a pretty disturbed relationship.
I'm not contesting the meme, I know that's for fun.
But if you look at the complex, you'll notice that it's the same question as "is he passive or active?" for male couples. It's a retrograde, patriarchal residue, and I really hope we will be able to move on from this.
(Sorry for the conference, I know nobody would care less, I'm pretty much talking to myself...)