A 'Screwing the System' short.
Resisting temptation has never been so much fun!
When Cosmo Rawlins makes a special request for his upcoming birthday, his toppy boyfriend strikes a deal with him: if Cosmo gives up smoking, Alasdair will buy him a car. What Alasdair doesn't realise, however, is that a week of keeping a close eye on his bratty submissive will test the very limits of his libido.
Warning: written in British English, where "fag" has an entirely different definition than it does in the States.
10,500 word gay erotic short story.