“Tool with a sharp end and a piece of metal that slides up and down the shaft attached to a piece of string”
"This is a can opener. The pointy part is pushed through the center of the can, which is then used as a fulcrum to push the cutting blade through the top. Finally, it’s spun around the center hole to finish opening the can."
nah, must be an upgrade model, head all plastic and stuff. Perhaps it's number 6?
I was sure it was Wall-e