Stick in the Mud

One time, after thwarting his nefarious scheme to take over Ben and Jerry's ice cream so that he could make Worcestershire Sauce-flavored ice cream, my Evil Twin - Kram Sheldon - told me that I can be a real stick in the mud. I told him that he was just bitter over the time when I had accidentally taken his pet stick, Ferdinand, and used it for firewood.  Siblings sometimes have a hard time letting go of the past.