This story is a nearly verbatim conversation that I had back when I worked retail with a customer who called in looking for a computer:
Customer: I need a computer with four megahertz.
Me: Excuse me?
Customer: You deaf? I said I need a computer with four megahertz!
Me: Do you mean a computer with four cores?
Customer: No you idiot! Don’t talk down to me! I want a computer with four megahertz!
Me: Sir, they haven’t made computers that ran at 4mhz since about 1985.
Customer: Don’t you lie to me! I saw an ad for a computer with 4 megahertz and you’re gonna show me how to get it!
Me: One moment sir, let me transfer you to automotive. Ask them about their flux capacitors.
Customer: That’s more like it.