echomislocation
When you drop an object—often something small—on the floor and you try to pick it up using sound cues, but it happens to be in the opposite location of what you've initially predicted.
Jim was busy writing his essay until he accidentally dropped his pencil on the floor. Without looking directly, he bent down towards his 5 o'clock because that's where he thought he had heard the pencil drop, but turns out that the pencil fell to his 12 o'clock. Jim just had a echomislocation.