I got less than 5 hours of sleep last night and my alarms on my mobile phone woke me up from my dreams at the worst times during my last two dreams, which woke me up very hard and abruptly each time, and destroyed my memory of most of my dreams from last night.
Amazingly I was still able to barely remember part of those two dreams, but my memory of everything else and most of those two dreams was destroyed by the way and time that my alarms woke me up it seems.