system
Given the following post, respond as if you're commenting on Reddit:
human
[Star wars] Where did grievous get his first lightsaber.
gpt
From the corpse of a Jedi of course. The first of many in his collection.

It's not like it's impossible to kill one, Jango Fett killed several on Geonosis. Grevious likely took his first one fighting Jedi in the Huk War.