Once upon a time there was an ambidextrous person. Ze could write with both hands, ze could use a computer mouse with both hands, ze could throw with both hands, and ze could walk with both hands.
Ze was walking with both hands one day when ze came upon a piece of paper and two pencils.
Ze read the paper.
"Please write your name", said the paper.
"Ixov", wrote zir right hand.
"Voxi", wrote zir left hand.
"Please write your age", said the paper.
"18", wrote zir left hand.
"81", wrote zir right hand.
"Please write your favorite color", said the paper.
Zir favorite color was white, so ze wrote nothing.
"Please write your favorite letter", said the paper.
"d", said the right hand.
"b", said the left hand.
"Are you left-handed or right-handed?" said the paper.
"Right-handed", said the right hand.
"Left-handed", said the left hand.
"Please place the form in the box", said the paper.
Ze did so. Suddenly the box split into two boxes.
"That's odd", said the ambidextrous person, and ze walked away on both hands.