I just tried licking my elbow, it's kinda hard... But I can lick my right nipple for a second or so! Now that takes talent!
I'm sure I could too... haha I just got my right elbow. I can do that one stretch, where you keep your legs straight, and fold myself into a sandwich, and lick my knees, that takes tons of practice and stretching (to keep your knees and legs 100% straight). I can also suck all my toes.