"Rose wants forever, and the Doctor wants to give it to her."
All I can add is that I did check the fic and I do not think the double entendre was intentional.
She was pleased to find him without underwear. He was hard, thick and had veins like an underground map.
Frankly, I'm speechless. Dumbledore's knee was one thing, but the Doctor's cock?? On the one hand, it would be quite handy if it were true, but you could hardly get it out at Kings Cross for a quick look, could you? And anyway, exactly how closely does it resemble the underground map? Are there yellow and green and silver lines on it? Or an attractive sans serif font for easy reference? And is it divided into Zones? I really do think we should be told. And more importantly, Rose wants to know if her current Oyster is valid, or will she need an extension....