Hearing an electronics device making an intermittent, repeating sound from somewhere in your house, and not finding either the device or knowing the meaning of the sound.
I was lying in bed awake in the middle of the night, and could not fall back to sleep because of an electronics enigma.
When you happen to see a play (traditional drama) which has absurd plot and confusing characters.
Last night, I saw a French drama and it was literally down to straight stupid story with poor narration. It will bag the Drama Enigma award of the year.
The phenomenon that results in a messy puddle of coffee and grounds on your countertop from your coffee maker overflowing because the carafe of was not positioned exactly where it should have been when you turned it on.
Damn! I woke up to another flippin' java enigma this morning. Now I have to bleach my countertop after cleaning up the mess and then strain my coffee so I can drink it. I'll probably be late for work.