In spite of me pushing forty, I just pulled an all-nighter. At 08:15 my phone's alarm (the phone is the cheapest Sony Ericsson) went off. When I pushed a button, it went on bleeping louder and louder, but asked: "Turn off alarm?".
Like, if you get woken up by the thing, manage to half-drunkenly grab it and press its "Yes" button, that you would possibly want it to go on waking you up..