Talking to my 20-year-old little brother.
Me: Do you and your friends email each other?
Tom: Mainly we IM.
Me: What if you're not both online at the same time?
Tom: We send emails, but how much can you say in an email?
Me: You can say a lot! Bob* and Vanessa* used to trade ten-page-long emails right as they started dating.
Tom: [sputtering] Ten - page - emails??
Me: It's not that unusual. A lot of people have done that.
Tom: I didn't even know email clients could support emails that long!
Me: Don't be absurd.
Tom: Why didn't they just break out the quill and fountain ink? And ready the carrier pigeons!