Take a look at the way this guy's tip bulges out the throat of his girl.
http://24.media.tumblr.com/tumblr_m0jieaZrMd1rrnfimo1_500.png
So very very hot.
http://24.media.tumblr.com/tumblr_m0jieaZrMd1rrnfimo1_500.png
So very very hot.