Ha Hakdog
You scream this at someone who's too busy daydreaming to notice you're giving them the worst kind of verbal beatdown.
Ha Hakdog! You're so zoned out you think you're on a vacation.
Ha Hakdog! You're like a dog who's been hit with a bat and still doesn't know it.
Ha Hakdog! You're so distracted you think you're the only one who matters.