It's like the guy that went to an interview to be a condom tester. When he arrived at the factory, he was introduced to one of the guys doing the same job. He was (now I have to be careful here as this isn't the right forum) getting 'stuck in' and testing the condoms on a wide variety of lovely ladies.
Anyway, the guy starts work, and for the first few days, he isn't invited to do the job properly -- he only gets a *ank from the gals to test the *ondoms.
So he complains to management. "This isn't the job I was offered. I was promised that I'd be having proper *ex with this testing job -- not a bloody *ank ten times a day!"
Management: "Take it easy mate, everyone has to work a week in hand when they start here."