system
Given the following post, respond as if you're commenting on Reddit:
human
[Dragon Ball Z] I heard that the supreme protector of Earth, Son Goku got shot by a gun by one of Freiza's soldiers... where can I get one of those guns and how common are they?

It seems like better home protection when you can incapacitate Gods with a well timed shot.
gpt
There was a scene in the cell saga (it may or may not have been filler, but it illustrates the idea well enough) where Krillin throws a rock at Goku's head while he sleeps.  His idea is that Goku, being in his Super Saiyan form, would just instantly blow the rock into a million pieces or it would just bounce off of him or something.  But because Goku wasn't channeling any energy into defending himself, when Krillin threw the rock, it just hit him on the head and hurt like hell.

It's the same principle with the gun.