today I visited my local BP garage9 (incorporating M&S food) to grab a sandwich. After a little queueing I approached the cash desk and lay my items upon it.

"Any fuel today Sir?"
I had not placed any on the counter so..... "No thank you"
"Would you enjoy a large coffee?"
well, actually I would... but I'd enjoy it alot more if I purchased it somewhere a shit pile cheaper than it was here.. "No thank you"
"Would you like a carwash today Sir?"
Actually..It could do with a wash but... "No thank you"
"we have a special offer today Sir... Buy 1 bottle of any Pepsi and get another free"
by this point I'm beginning to think she may be taking the piss... "No thank you"

"How about a muffin"
oh come on.... now she's definately having a laugh... How I held back the extremely inappropriate answer, I'll never know...
"No......... Thank you!!"

finally... after a barrage of questions I picked up my sandwich ready to leave...
"Does Sir have a nectar card?"

"FOR FUCKS SAKE WOMAN... I ONLY CAME IN FOR A TOSSING SANDWICH... WILL YOU PLEASE STOP TRYING TO FORCE ME TO BUY EVERYTHING IN THIS OVER-PRICED FUCK HOLE OF A SHOP... LEAVE ME THE FUCK ALONE"

Is what I would liked to have said...
instead..... "Ooohh... I almost forgot... here you go..ha (fake laugh) ha"... and handed over my never used Nectar card.

Oh the shame of being polite.