I've experienced double penetration sex in the way of my cock and another guys cock in the same pussy at the same time. It took her a little time to accommodate us, but it worked. I was on the bottom, so I couldn't see the action, but in addition to her warm wet pussy, I could feel him gliding his lubed cock up and down mine. I was so fucking aroused feeling his cock, hearing his moans of pleasure, and knowing my cock was 1/2 of his pussy wall. She cum first from all that fullness inside her. Then he cum and soaked my cock with his warm juices. Before he was done, I returned the favor and coated his dick with my hot load while he was still hard and pressed against my cock.
What a mental fuck I got that day!! He slowly pulled out, then I slowly slid out - all our cum dripping down my balls and stomach. They both rolled to either side of me as we rested for a moment. I was soaked. What happened next blew my mind... both of them went down on me and licked/sucked me clean. Seeing and feeling him open my legs and clean up my balls... INSTANT ERECTION for me! They shared my cock like it was the last lollipop on Earth. (Double dick-flavored lollipop!) I don't think I've ever cum so quickly right after a previous orgasm as I did that day.