I've always done it w/my lips on bottom (of course exceptions were made to spice things up), but most of the pictures of my brother and his wife show her lips on bottom. I always thought it was because he's kind of a nerd who hasn't kissed a lot of girls, but lately I've been seeing a bunch of pictures where the guy's lips are on top. That could explain why making out w/some girls is a little awkward at first. I dunno, I just always thought kissing a girl's bottom lip gave you a little more control over the situation and was therefore a little more masculine. Thoughts?