Sudan One Joke

Customer: Worcester sauce crisps please
Shopkeeper: Sorry can't, it's off the shelves; cancer scare.
Customer: Oh right, Chinese Chicken Wings?
Shopkeeper: Ah that's the same. Cancer scare
Customer: Hamburger Relish?
Shopkeeper: Cancer scare
Customer: Sausage and Mash?
Shopkeeper: Cancer scare
Customer: Cottage Pie?
Shopkeeper: Yes ...no wait, cancer scare.
Customer: So they're all off the shelves because of a cancer scare?
Shopkeeper: Yes
Customer: (sigh) Just give me a packet of fags then.
Shopkeeper: Certainly. £4.50 please!