108 minutes

My parents are lost...

I love to play tricks on them, like in that show I listened to when I was alone in the dark.

Basically I make them do things every 108 minutes and study their reactions. Not only does that provide me with lots of information for my research, but it is extremely entertaining as well!

And just to make sure that the 108 minutes are enforced, I emit a warning sound when the time up is getting close by.
I'm still working on my release of black smoke though... not really black (rather brownish) and more solid/liquid than smoke-like...