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The amount of time you wait before replying to someone on Facebook so it looks like you're not a sad, lonely loser who stares at their phone all day.
You see a message at 8 a. m. You reply at 11 p. m. You're a legend.
She posted on your wall at noon. You replied at midnight. You're a beast.
He messaged you during lunch. You replied after dinner. You're a superhero.