Difficulty:*****
Her: Climb up on a high piece of furniture with flat surface like a kitchen unit, desk, counter or even on the top of your dining table. Find a place where you can lie down and he can stand in front of you. Lie back and perch yourself right on the edge. Tilt your pelvis upward so that your back forms a straight line angling up toward him for your organs to meet. Rest your legs into his shoulder to feel comfy.
His: Stand in front of her, lift her legs and rest it into your shoulder. Place your hands under her hips, so you can hold his booty at the perfect angle while you thrusts. If the furniture is too low, you can kneel and place a pillow on your knees so that kneeling penetration would be comfy.
Why it feels oh-so-good.. The pelvic tilt gives his penis better access to your G-spot and builds in more friction for both of you. Psychologically it's great because spontaneous, rough and ready sex on the kitchen table, desk or washing machine gives you a big thrill. When done very slowly, it's completely dreamlike. It gives an orgasm that feels like you're flying.
Tip: This position is easy when the two partners are of similar height, or the guy is taller. It would be a shame to miss out just because he's a bit short, though: a few large books or cushions under his feet should do it!