To screw up an exceedingly menial or easy task, without possessing the mental faculties to realize your own error.
Etymology: Comes from a bastardization of the words "Land" and "Florentina," probably a reference to one of the colonies founded by Columbus on one of his trips to the Americas, which he mistook for Asia.
Can be used as a noun or a verb.
1. Christopher Columbus Landolina'd the search for a faster trade route to the Indies.
2. I heard he thought those lyrics to 'Blinded by the Light' were 'wrapped up like a douche.' What a Landolina.