They text you a whole paragraph. You reply with 'cool.' They take 3 hours to reply with 'ok.'

You're in the middle of a conversation. They vanish for 8 hours. You're like, 'Did they get hit by a truck?'

You send them a meme. They reply with 'lol' 48 hours later. You're like, 'Bro, I’m still waiting for the punchline!'