So, I'm at a store, paying for my stuff, and this situation happens more often than I'd like:
Them: Would you like to join our discount club/buy more stuff/sign up for our e-newsletter/purchase an extended warranty/gargle my balls?
Me: No thanks, I'm all set.
Them: You can save $10 right now!
Me: That's ok.
Them: It'll only take a second!
Me: Nope, not interested.
Them: We send you coupons on your birthday!
And so on. I know these poor cashiers are forced by management to bother me with special offers and shit, but I am never and will never be interested in what they want to sell me. Part of me just wants to tell them to shut up and ring up my purchases so I can get the hell out of there.