Two Blushing Pilgrims

I’ve been biting my lip an awful lot lately. The skin around the edges has become somewhat dry and cracked, not to mention sore. Fortunately one of my minions scuttled off to the nearest branch of Sainsbury's and bought me a small, but manly, tin of cocoa butter Vaseline… GrrRrrr… But it raises, inside of me, an interesting question; where does my lip end and my face begin?