louse up

verb

1. To mess up; to confuse; to put into a state of disorder.

   “To be loused up by Humbolt was really a kind of privilege. It was like being the subject of a two-nosed portrait by Picasso, or an eviscerated chicken by Soutine.”

   “The recent flu epidemic that loused up all my plans to see Pat Bond.”

2. To mistreat (someone).