Full Idea
It is perfectly possible to be bored without being aware of the fact.
Gist of Idea
We can be unaware that we are bored
Source
Lars Svendsen (A Philosophy of Boredom [2005], Ch.1)
Book Reference
Svendsen,Lars: 'A Philosophy of Boredom' [Reaktion Books 2005], p.14
A Reaction
True. Also, I sometimes mistake indecision for boredom. It becomes very hard to say for certain whether you are bored. I am certain that I am bored if I am forced to do something which has no interest for me. The big one is free-but-bored.