Having asked me what sort of books i liked to buy (i explained i prefered to sell them), the nice lady pulled out a handfull of paperbacks from her shopping trolley.
"I'm sorry, I never buy paperbacks" i explained.
Undeterred, she pulled out a further 5 bags of paperbacks, emptying each on the counter, and plucking the odd tome from the dirty pile with a "What about this one". 7 times more I said "I'm sorry, I never buy paperbacks".
She went off telling me that she would find some more for me to buy.