Do you remember how you zapped out of the exam hall and it looked like you read nothing and know nothing of the questions on the exam papers staring at you?
This is a blank state.
And gradually with time, you begin to fill in the gaps till you arrive at a whole.
A state of the mind that calls for re strategizing, mapping out your thought plans and taking a clue from situations and people around. This is also the time you decide who your friends really are and watch them afar, you also get to think about what aspect of life you should reconsider.
This is the time for some kind of life blanks. And no frivolity or wishy wash will pass through these blanks. Because it becomes irritant. Suddenly your attention span to some things becomes short and you get restless and a bit worried about nothing and something in particular. If you feed well, you can think well and reach out. If you feed wrong, you think amiss and end up polluting yourself and others with irrelevance.
I think it is someone who cannot properly harness his inner energies to fill in the blanks and feed well that goes about in all rounds wherever, spewing salad( a mixture of confused concoctions; my def), meaning unwell.