mind

• On the tip of your tongue

  To almost remember something, such as a name or a word, but be unable to fully recall it at that moment.

• Rack your brains

  To think very hard and intensely, often for an extended period, in an attempt to remember something or solve a difficult problem.

• Use your noodle

  To think carefully and apply one's intelligence to solve a problem or understand a situation.

• spaced out

  To be mentally disengaged from one's surroundings, often appearing dreamy or distracted.

• Head in the clouds

  To be daydreaming, impractical, or preoccupied with imaginary thoughts rather than reality.

• Go in one ear and out the other

  Information that is heard but immediately forgotten or ignored, without being processed or considered.

• A faint memory

  A faint memory is a recollection that is vague, indistinct, or barely discernible.

• A fuzzy memory

  A fuzzy memory refers to a recollection that is vague, unclear, or incomplete.

• A blurred memory

  A memory that is unclear, indistinct, or difficult to recall with precision.

• In one ear and out the other

  When something goes in one ear and out the other, it means information heard is quickly forgotten, ignored, or fails to be absorbed.