Apparently T-Rex can live up to a couple weeks without food.
So I would spend most of that time pestering it, throwing rocks and stuff just to keep it awake and agitated. Ideally get it to chase me back into my indestructible hut.
After week 3, if it isn’t dead, it will be so lethargic and ill that I could hack away at it’s tail until enough bleeding finishes the job. It says I have food, it does not say he has food.










You can kill a human with a well place punch or just a chokehold.
So yes, you can also do it with a thumbtack.