Miller, you clever bastard! I get it now! IT’S A CODE!
The number of fries in Robin’s hand is eight.
There is a dragon tattoo on Joker’s back, and “dragon” is an anagram for “danger”.
Fire symbolizes cleansing of the soul.
There are five members in the Justice League, and one of them is Plastic Man.
In China, yellow was associated with soil of the five basic elements and mid-way of the directions.
By dividing the square root of the hypotenuse, combining 5 with 8, multiply it with seven, and then write the word “danger” backward with yellow paint, then set fire to it...
... My god...
Buddha is the child of Jesus Christ!
That, or All Star Batman and Robin is a really stupid comic book.