Twelve-years-old Dick Grayson is a twelve-year-old trapeze artist born twelve years ago and is twelve-years-old when he becomes twelve-year-old Robin. At twelve-years-old. Age twelve.
To clarify, this wasn't just one panel- the entire story revolved around the Joker's boners or Batman and Robin's boners. There are nearly forty uses of the the word and the story is less than ten pages long.
Batman hates rock & roll! (Courtesy of Batman: Fortunate Son and Atop The Fourth Wall)
Punk is nothing but death! And crime! And the raaaaaage of a beast!
The classic Batman origin story has three: the bat flying through the window, "Criminals are a superstitious, cowardly lot" and "I shall become a bat!"
Taking Batman panels out of context and adding the caption "Batman Hates X". One example being Batman kicking a guy for eating ice cream. "Batman Hates Ice Cream"◊.
The sentence "Batman would win if he was given a week in advance to prepare" or something similar to it is bound to pop up in almost any "Who would win, Batman or X?" conversation.
The Nightwing trailer for the game has "Trained by Batman" as part of his "Training" profile. The fandom has now taken "Trained by Batman" to automatically mean that the trainee is a badass.
This is an actual achievement received for completing the initial tutorial sequence of the game, in which Bruce Wayne suits up and becomes Batman. A Captain Obvious moment if ever there was one.