Three hours later

Karyn: OK, let's do this. Jon: Wait a minute. I wish Karyn's parents won't interrupt us until I go home. Karyn: Was that necessary? Jon: Yes, it was. Last time I came over, your dad came in and we played Tony Kart for two hours. The time before that, he had us play Tony Party. Karyn: Alright, have it your way. I'm starting. I wish... Three hours later Karyn: And done. That wasn't long at all, right Jon? Jon: zzz... Karyn: Jon, wake up! Jon: What, what happened? Are you done? Karyn: Yes, I'm done. Jon: Give me the stone. I have a wish I have to make. Karyn: Here. Jon: I wish no one will interrupt my next wish. I wish the magic stone will disappear from this world until my twenty-first birthday, where it shall return to me as a birthday gift. That was a mouthful.