Do you remember that episode of Manny being Manny?
They were playing the Yankees and Manny refused to play (the real reason was contract issues: he was afraid the team would exercise its option for the upcoming year and he wanted to become a FA) saying his knee hurt. So the Sox ordered an MRI and when they asked Ramirez which knee hurt, he couldn't remember. So they MRI'd BOTH knees.
Despite it being an incredibly selfish move, I still laughed my ass off.