the most annoying ways you woke up from a lucid can be from something happening in a dream or from RL that woke you up
in my case it was RL, i was having a lucid dream and then i was having trouble keeping it going, and i woke up, and i could hear my brother banging on the tv in the other room to fix the colour up :? oh and it was around 1:00am in the morning -_-
i was really annoyed too >_>
so post yours up :P