I'm always amazed at how the nice women doing it can actually find enough bosom flesh on me to do the procedure 
But please Gillybob grit your teeth and do it, and think of how fortunate we are to have such things as mammograms and smear tests free of charge.
I remember when working with younger women, who would moan about smear tests, and in some cases not go. I must admit I did get on my high horse about it, and tell them how lucky they were to have such a service. I think the death of Jade Goody (remember her?) from cervical cancer, at a young age and leaving behind young children should have been a wake up call for them.
Sorry, Gillybob I digressed there, but still urge you to go, we are lucky to have this service and should use it.