If you see someone wearing this garment in a public place, my advice to you is simple:

Act swiftly. Move in silently and with great stealth. Bludgeon the wearer to death with a baseball bat. Step away, slowly.

You will be doing the human gene pool a tremendous favour.

(...alright, i ought to admit i'm not really a genocidal maniac, and the people at instructables are probably creative geniuses, DaVincis of the knitting world etc, who deserve some praise to accompany that ridicule.)