whose banana was this?

when we got back to Dave's house we decided to move some furniture around and clean his room before we unpacked the car. after moving a bookcase we discovered a banana that had fallen behind it somehow and hardened/stuck to the wall.

we don't know how it got there or how long it had been there. our best guess: subletter from summer 2005 who would have been tall enough to set a banana down on top of the bookcase.