Floating crapthat swims around in your head and leads you off on useless tangents; thoughts you get hung upon for no good reason and, no matter how hard you try, you just can't seem to shift; the egotistical concerns that the attitudes "I", "me", and "mine" trail around in their wake; that which stands in the way of true understanding.
Disperse the cloud of mindstuff and the original state of clarity is restored.