Plastic Butter Knife
The Plastic Butter Knife is an item available in Neopets. It was once can be bought at the Battle Magic store in the Bazaar in Neopia Central, but now retired and can be obtained by Shop Wizard, Trading Post, or Auction Genie.
You can't say its the completely weakest weapon in the game, but it sure is down there. This one has an extremely small amount of icons, not only that, but it breaks quite easily in battle.