Descriptive of the state of emotional frustration and disappointment experienced by any cat, when looking for a lap, only to find all available laps occupied, either by other cats, laptop computers, or other large objects.

To any cat, this is the emotional result of getting lap-blocked
Felix left the room looking laplorn, having discovered that his owner's lap was already occupied by his owner's laptop.
by mpwd April 21, 2011
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