A plain wooden rolling pin used for flattening dough, the rolling pin has since been used to crack skulls. It is one of the weakest melee weapons in the game.
A special version exists in the simulation Tranquility Lane, with significantly higher damage. It is found on the kitchen table in the Rockwell Residence. Killing anyone in Tranquility Lane is temporary, as talking to Betty will reset them. If you activate the Chinese invasion simulator, they will stop resetting.