This is a dream that took quite a while to fulfill. Tried with brief success but never had a real Lucky Pierre experience until my 50s with my present partner. We've done it with four or five different guys. Best for me is the middle, in which every stroke into the bottom I'm fucking also causes my ass to squeeze the dick fucking me. That is beyond any other threesome experience ever. But topping a top is pretty damn hot too, you can just stand there and get your dick ridden fantastically while the middle guy does most of the work. Or pound him into the bottom he's fucking. Would do it in an instant with an m/f couple, but reckon that aspect of the dream might never be fulfilled.