"My Two Cups of Coffee"

"Don't talk to me until I've had my second cup of coffee" is an American expression that originated in the early 1980s. It was a manifestation of people who lived alone inside lonely studio apartments with no one to talk to--and who dripped their coffee into cups. Typically, the strong coffee would be good enough for one extra cup so that it would not go to waste, and, the person would be compelled to take the second cup instead of sharing it with an absent person.