The Stair Master
Also called: On the stairs
Rear entry on a staircase: the receiving partner leans forward onto the higher steps while the other stands a step or two below. The stairs fix any height difference.
The receiving partner faces up the stairs and places their hands on a step at about chest height, leaning forward. They put one foot or knee on a lower step and keep the other foot planted, which tilts the hips back and up. The other partner stands behind them on a lower step or the floor and holds their hips. Because every step changes the height by several inches, you can move up or down one stair until hips line up perfectly. Bending the raised knee more opens the angle; bringing the hands to a lower step drops the chest and makes it deeper.
Couples with a height difference, and anyone who wants a quick change of scene from the bedroom.
Put a folded towel or cushion on the steps under hands and knees. Carpeted stairs are kinder than bare wood.
Experiment with the step. Moving the receiving partner's front foot up one stair changes the angle more than any other adjustment here.
Stair edges are hard and slippery. Go slowly, keep a hand on the railing if there is one, and pad any step that takes a knee.
Agree on it before you try it, use plenty of lube, and either of you can stop at any point. This guide is general information, not medical advice.