@rain i'm genuinely unsure if i'm missing context on it or if it's the same kind of humour as saying "hi" "hello" at each other endlessly as a bit i did with someone offline (which was pretty funny to me to be fair)
@tisane seems like it originated from a shitposting subreddit, so i don't think there's any context you need to know (other than it initially said "secret" instead of "Hi")