I would assume people do so because of the correlation between the two. They both represent weapons of some sort or purpose.
In the case you mention, both are adequate self defense tools. Unlike your assosciation of the car and the lawnmower, where neither really have a commonly shared purpose.
You can actually see the blade style in the photo? I sure as hell can't.I’m about to order that Benchmade in your photo. How do you like yours?
Creeper said:You can actually see the blade style in the photo? I sure as hell can't.
David White said:Maybe it is for scale? Just sayin... Ya know?
Maybe to prop up the gun?
Typically, the knife pictured doesn't appear to have ever been used.