Then hands would come into it. Quick nimble fingers and strong grips. Hips, cock, one on his neck holding his head just so. God, those hands alone where enough... Even the numbers thrilled him. six hands, thirty fingers. All running over his fabulous body in stimulating ways.
Three minds going faster than light. Minds that had seen the wonders and the horrors of the Universe, all concentrating on pleasing him, on mapping his body and adding it to their infinate pool of wisdom.
But the numbers didn't work. They'd need one more. Someone to get the precise camera angles for all his best sides. And maybe when things got to hot for the film, someone to join him in the middle of those six hands, thirty fingers, three mouths....
---
"Ok, sir, I admit that is a very intense, and strangely numbers obsessive, fantasy, but how does that in any way explain why you're at my door at four seventeen in the morning?"
"It was a fantasy about three of the most brilliant minds in the known universe thinking up the most intense and erotic activities, all while focusing their amazing brilliance on me... and I couldn't enjoy even the idea of it without adding you into the mix to share it, Ianto."
"I see, sir. And did you, if I may ask?"
"Did I what?"
"Enjoy those six hands and thirty fingers and three mouths."
"Well of course not. Not yet anyway."
"Not yet?"
"Nope, they parked the TARDIS down the street while I came to invite you into a five way."