At 3:30 am the smoke detector in my bedroom went off for 3 (VERY LOUD) beeps. Then stopped. I essentially levitated out of bed. Checked over the house. Everything was fine. It never went off again. It then took me abut 2 hours to go back to sleep.
I hate smoke detectors. The only thing they ever do is wake me up when the battery is going and go off if I cook at too high a temperature. Now I can add random beeping bullshit to the reasons I hate them.