You can learn a lot from an email exchange between two people.
I recently heard the New Kids on the Block was coming to Chicago for their reunion tour. This brought back memories from my childhood. I really only have one, which is that New Kids on the Block was the first cassette tape that my sister had. This prompted me to email her and tell her the "good news":
her response, which made me laugh:
She's obviously the witty one in the family!