The ins and outs...
You: Climb up on a tall-ish piece of furniture like a kitchen unit or washing machine. Perch yourself right on the edge and lean on your arms.
Him: Standing in front of you, he lets you wrap your legs around his bum. Gazing into your eyes, he thrusts while you direct him.
Why is it so good? Psychologically it's great, because spontaneous, rough-and-ready sex on the kitchen table, desk or washing machine gives you a big thrill.
A good time to try it: When you're expecting friends round for dinner and fancy a quickie before they arrive!
Tip: This position is dead easy when the two partners are of a similar height, or he's 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!