Too many negations, again

Today’s edition of the comic “Non Sequitur” has this line in it:

You have 1,227 messages of which,#[1] only two aren’t so mind-numbingly moronic that they can be read without making your head explode.

This is another example of how too many negations tax the semantic performance of the linguistic brain.

Think about it. The writer is first identifying the property of messages that they are so mind-numbingly moronic that they cannot be read without making your head explode. And then, he wants to say that only two of 1,227 messages do not have that property. But as soon as he tries to do that, the negation on can vanishes.

Compare his sentence to what it should “really” be:

You have 1,227 messages of which, only two aren’t so mind-numbingly moronic that they cannot be read without making your head explode.

Trying to process these sentences certainly threatens to make my head explode.

[1]: What’s with that random comma?