Cooks and drops raw fish that people drop at the river fishing spot in barbarian village for pretty decent cooking xp rates.
Be near the fishing area.
Be Level 25 cooking.
Have a tinderbox in your inventory.
Have an hatchet equipped.
Be on world 1 or world 8.
I've been running this script with nonstop results on world 8. However if this script gets popular or people are not on the world you're on, obviously this script will not work.