The Standing Dragon
a.k.a. Crouching Tiger, Hidden Serpent
Benefits: An ideal position for G-spot stimulation. Seeing the round curves of her rear tends to be highly erotic for you.
Stand and enter her from behind as she poses on all fours on the edge of the bed and arches her back to lift her buttocks.
Now try this: With your legs outside of hers, use your thighs to squeeze her knees together, which tightens her vagina around your penis
a.k.a. The Lazy Susan
Ask her to bend her body over the arm of a couch as you enter her from behind. She can grind on the firm but cushy arm for multiple stimulation with minimal effort.
Now try this: Have her cross her ankles. This will squeeze her vaginal and gluteal muscles tightly around your penis
a.k.a. The Repair Man
This is a variation on the Hot Seat with her sitting in your lap, but this time planting yourselves on top of a washing machine set at the highest agitator cycle.