Him: What's this next guy's first name again?
Me: Donald. I think he goes by Don.
Him: Don? (with an 'ah' sound) Well, how do you know it's not Don? (with an 'oh' sound)
Me: ..........You're absolutely right, FrOHdrick FrONkenstEEn. It *could* be Don. (with an 'oh' sound)
Him: Thanks, AYgor!