Now, just what is, the Neddie Seagoon fallacy?
It is this:
In a Goon Show script Neddy Seagoon offers a picture of a gun as his bit to fight a battle. Nice, but useless in the real world.
It is the term given to any assertion where an image of something is said to have an effect in opposition to an actual something else.
It is similar to turning up to a gun fight with a knife.
Here's an example of its use.